diff --git a/frontend/karma.conf.js b/frontend/karma.conf.js
index a14a427..32c844e 100644
--- a/frontend/karma.conf.js
+++ b/frontend/karma.conf.js
@@ -1,10 +1,9 @@
 // Karma configuration file, see link for more information
 // https://karma-runner.github.io/1.0/config/configuration-file.html
 
-module.exports = function(config) {
-  const puppeteer = require('puppeteer');
-  // noinspection JSUnresolvedFunction
-  process.env.CHROME_BIN = puppeteer.executablePath();
+process.env.CHROME_BIN = require('puppeteer').executablePath();
+
+module.exports = function (config) {
   config.set({
     basePath: '',
     frameworks: ['jasmine', '@angular-devkit/build-angular'],
@@ -43,16 +42,14 @@ module.exports = function(config) {
     logLevel: config.LOG_INFO,
     autoWatch: true,
     // browsers: ['Chrome', 'ChromeHeadless'],
-    browsers: ['ChromeHeadless'],
+    browsers: ['MyChromeHeadless'],
     customLaunchers: {
-      ChromeHeadless: {
-        base: 'Chrome',
+      MyChromeHeadless: {
+        base: 'ChromeHeadless',
         flags: [
-          '--headless',
           '--no-sandbox',
           '--disable-setuid-sandbox',
           '--disable-gpu',
-          '--disable-dev-shm-usage',
           '--remote-debugging-port=9222',
         ],
       },
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 5fa1e56..7767b28 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -26,6 +26,7 @@
         "angular2-jwt": "^0.2.3",
         "bootstrap": "~4.3.1",
         "jquery": "3.5.1",
+        "karma-phantomjs-launcher": "1.0.4",
         "ngx-logger": "4.1.9",
         "popper.js": "1.16.0",
         "rxjs": "^6.5.5",
@@ -4216,7 +4217,6 @@
       "version": "0.2.4",
       "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
       "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
-      "dev": true,
       "dependencies": {
         "safer-buffer": "~2.1.0"
       }
@@ -4253,7 +4253,6 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-      "dev": true,
       "engines": {
         "node": ">=0.8"
       }
@@ -4397,8 +4396,7 @@
     "node_modules/asynckit": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
-      "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
-      "dev": true
+      "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
     },
     "node_modules/at-least-node": {
       "version": "1.0.0",
@@ -4508,7 +4506,6 @@
       "version": "0.7.0",
       "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
       "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=",
-      "dev": true,
       "engines": {
         "node": "*"
       }
@@ -4516,8 +4513,7 @@
     "node_modules/aws4": {
       "version": "1.11.0",
       "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.11.0.tgz",
-      "integrity": "sha512-xh1Rl34h6Fi1DC2WWKfxUTVqRsNnr6LsKz2+hfwDxQJWmrx8+c7ylaqBMcHfl1U1r2dsifOvKX3LQuLNZ+XSvA==",
-      "dev": true
+      "integrity": "sha512-xh1Rl34h6Fi1DC2WWKfxUTVqRsNnr6LsKz2+hfwDxQJWmrx8+c7ylaqBMcHfl1U1r2dsifOvKX3LQuLNZ+XSvA=="
     },
     "node_modules/axobject-query": {
       "version": "2.0.2",
@@ -4758,7 +4754,6 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
       "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
-      "dev": true,
       "dependencies": {
         "tweetnacl": "^0.14.3"
       }
@@ -4825,20 +4820,6 @@
       "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
       "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
       "dev": true,
-      "funding": [
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/feross"
-        },
-        {
-          "type": "patreon",
-          "url": "https://www.patreon.com/feross"
-        },
-        {
-          "type": "consulting",
-          "url": "https://feross.org/support"
-        }
-      ],
       "dependencies": {
         "base64-js": "^1.3.1",
         "ieee754": "^1.1.13"
@@ -5241,7 +5222,6 @@
       "version": "0.2.13",
       "resolved": "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz",
       "integrity": "sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI=",
-      "dev": true,
       "engines": {
         "node": "*"
       }
@@ -5264,8 +5244,7 @@
     "node_modules/buffer-from": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
-      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==",
-      "dev": true
+      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A=="
     },
     "node_modules/buffer-indexof": {
       "version": "1.1.1",
@@ -5488,8 +5467,7 @@
     "node_modules/caseless": {
       "version": "0.12.0",
       "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
-      "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=",
-      "dev": true
+      "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw="
     },
     "node_modules/chalk": {
       "version": "3.0.0",
@@ -5933,7 +5911,6 @@
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
       "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
-      "dev": true,
       "dependencies": {
         "delayed-stream": "~1.0.0"
       },
@@ -6031,7 +6008,6 @@
       "version": "1.6.2",
       "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.2.tgz",
       "integrity": "sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==",
-      "dev": true,
       "engines": [
         "node >= 0.8"
       ],
@@ -6269,8 +6245,7 @@
     "node_modules/core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
-      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
-      "dev": true
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
     },
     "node_modules/cors": {
       "version": "2.8.5",
@@ -6772,7 +6747,6 @@
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
       "integrity": "sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=",
-      "dev": true,
       "dependencies": {
         "assert-plus": "^1.0.0"
       },
@@ -7066,7 +7040,6 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
       "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
-      "dev": true,
       "engines": {
         "node": ">=0.4.0"
       }
@@ -7320,7 +7293,6 @@
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz",
       "integrity": "sha1-OoOpBOVDUyh4dMVkt1SThoSamMk=",
-      "dev": true,
       "dependencies": {
         "jsbn": "~0.1.0",
         "safer-buffer": "^2.1.0"
@@ -7646,8 +7618,7 @@
     "node_modules/es6-promise": {
       "version": "4.2.8",
       "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.8.tgz",
-      "integrity": "sha512-HJDGx5daxeIvxdBxvG2cb9g4tEvwIk3i8+nhX0yGrYmZUzbkdg8QbDevheDB8gd0//uPj4c1EQua8Q+MViT0/w==",
-      "dev": true
+      "integrity": "sha512-HJDGx5daxeIvxdBxvG2cb9g4tEvwIk3i8+nhX0yGrYmZUzbkdg8QbDevheDB8gd0//uPj4c1EQua8Q+MViT0/w=="
     },
     "node_modules/es6-promisify": {
       "version": "5.0.0",
@@ -8281,8 +8252,7 @@
     "node_modules/extend": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
-      "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==",
-      "dev": true
+      "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g=="
     },
     "node_modules/extend-shallow": {
       "version": "3.0.2",
@@ -8365,16 +8335,12 @@
       },
       "engines": {
         "node": ">=8"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
       }
     },
     "node_modules/extsprintf": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
       "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
-      "dev": true,
       "engines": [
         "node >=0.6.0"
       ]
@@ -8516,7 +8482,6 @@
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/fd-slicer/-/fd-slicer-1.1.0.tgz",
       "integrity": "sha1-JcfInLH5B3+IkbvmHY85Dq4lbx4=",
-      "dev": true,
       "dependencies": {
         "pend": "~1.2.0"
       }
@@ -8722,7 +8687,6 @@
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/forever-agent/-/forever-agent-0.6.1.tgz",
       "integrity": "sha1-+8cfDEGt6zf5bFd60e1C2P2sypE=",
-      "dev": true,
       "engines": {
         "node": "*"
       }
@@ -8731,7 +8695,6 @@
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/form-data/-/form-data-2.3.3.tgz",
       "integrity": "sha512-1lLKB2Mu3aGP1Q/2eCOx0fNbRMe7XdwktwOruhfqqd0rIJWwN4Dh+E3hrPSlDCXnSR7UtZ1N38rVXm+6+MEhJQ==",
-      "dev": true,
       "dependencies": {
         "asynckit": "^0.4.0",
         "combined-stream": "^1.0.6",
@@ -8926,7 +8889,6 @@
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/getpass/-/getpass-0.1.7.tgz",
       "integrity": "sha1-Xv+OPmhNVprkyysSgmBOi6YhSfo=",
-      "dev": true,
       "dependencies": {
         "assert-plus": "^1.0.0"
       }
@@ -8993,8 +8955,7 @@
     "node_modules/graceful-fs": {
       "version": "4.2.4",
       "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.4.tgz",
-      "integrity": "sha512-WjKPNJF79dtJAVniUlGGWHYGz2jWxT6VhN/4m1NdkbZ2nOsEF+cI1Edgql5zCRhs/VsQYRvrXctxktVXZUkixw==",
-      "dev": true
+      "integrity": "sha512-WjKPNJF79dtJAVniUlGGWHYGz2jWxT6VhN/4m1NdkbZ2nOsEF+cI1Edgql5zCRhs/VsQYRvrXctxktVXZUkixw=="
     },
     "node_modules/handle-thing": {
       "version": "2.0.1",
@@ -9036,7 +8997,6 @@
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/har-schema/-/har-schema-2.0.0.tgz",
       "integrity": "sha1-qUwiJOvKwEeCoNkDVSHyRzW37JI=",
-      "dev": true,
       "engines": {
         "node": ">=4"
       }
@@ -9045,7 +9005,6 @@
       "version": "5.1.5",
       "resolved": "https://registry.npmjs.org/har-validator/-/har-validator-5.1.5.tgz",
       "integrity": "sha512-nmT2T0lljbxdQZfspsno9hgrG3Uir6Ks5afism62poxqBM6sDnMEuPmzTq8XN0OEwqKLLdh1jQI3qyE66Nzb3w==",
-      "dev": true,
       "dependencies": {
         "ajv": "^6.12.3",
         "har-schema": "^2.0.0"
@@ -9246,6 +9205,18 @@
         "minimalistic-assert": "^1.0.1"
       }
     },
+    "node_modules/hasha": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/hasha/-/hasha-2.2.0.tgz",
+      "integrity": "sha1-eNfL/B5tZjA/55g3NlmEUXsvbuE=",
+      "dependencies": {
+        "is-stream": "^1.0.1",
+        "pinkie-promise": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/hex-color-regex": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/hex-color-regex/-/hex-color-regex-1.1.0.tgz",
@@ -9780,7 +9751,6 @@
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/http-signature/-/http-signature-1.2.0.tgz",
       "integrity": "sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=",
-      "dev": true,
       "dependencies": {
         "assert-plus": "^1.0.0",
         "jsprim": "^1.2.2",
@@ -10459,7 +10429,6 @@
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-1.1.0.tgz",
       "integrity": "sha1-EtSj3U5o4Lec6428hBc66A2RykQ=",
-      "dev": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -10500,8 +10469,7 @@
     "node_modules/is-typedarray": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/is-typedarray/-/is-typedarray-1.0.0.tgz",
-      "integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=",
-      "dev": true
+      "integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo="
     },
     "node_modules/is-unc-path": {
       "version": "1.0.0",
@@ -10539,8 +10507,7 @@
     "node_modules/isarray": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
-      "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=",
-      "dev": true
+      "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
     },
     "node_modules/isbinaryfile": {
       "version": "3.0.3",
@@ -10557,14 +10524,12 @@
     "node_modules/isexe": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
-      "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=",
-      "dev": true
+      "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA="
     },
     "node_modules/isstream": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/isstream/-/isstream-0.1.2.tgz",
-      "integrity": "sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=",
-      "dev": true
+      "integrity": "sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo="
     },
     "node_modules/istanbul-api": {
       "version": "2.1.7",
@@ -10930,8 +10895,7 @@
     "node_modules/jsbn": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz",
-      "integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM=",
-      "dev": true
+      "integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM="
     },
     "node_modules/jsesc": {
       "version": "2.5.2",
@@ -10959,8 +10923,7 @@
     "node_modules/json-schema": {
       "version": "0.2.3",
       "resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.2.3.tgz",
-      "integrity": "sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM=",
-      "dev": true
+      "integrity": "sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM="
     },
     "node_modules/json-schema-traverse": {
       "version": "0.4.1",
@@ -10970,8 +10933,7 @@
     "node_modules/json-stringify-safe": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz",
-      "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=",
-      "dev": true
+      "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus="
     },
     "node_modules/json3": {
       "version": "3.3.3",
@@ -11031,7 +10993,6 @@
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.1.tgz",
       "integrity": "sha1-MT5mvB5cwG5Di8G3SZwuXFastqI=",
-      "dev": true,
       "engines": [
         "node >=0.6.0"
       ],
@@ -11161,6 +11122,15 @@
       "integrity": "sha512-PtilRLno5O6wH3lDihRnz0Ba8oSn0YUJqKjjux1peoYGwo0AQqrWRbdWk/RLzcGlb+onTyXAnHl6M+Hu3UxG/Q==",
       "dev": true
     },
+    "node_modules/karma-phantomjs-launcher": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/karma-phantomjs-launcher/-/karma-phantomjs-launcher-1.0.4.tgz",
+      "integrity": "sha1-0jyjSAG9qYY60xjju0vUBisTrNI=",
+      "dependencies": {
+        "lodash": "^4.0.1",
+        "phantomjs-prebuilt": "^2.1.7"
+      }
+    },
     "node_modules/karma-source-map-support": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/karma-source-map-support/-/karma-source-map-support-1.4.0.tgz",
@@ -11363,6 +11333,11 @@
         "node": ">=8.0"
       }
     },
+    "node_modules/kew": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/kew/-/kew-0.7.0.tgz",
+      "integrity": "sha1-edk9LTM2PW/dKXCzNdkUGtWR15s="
+    },
     "node_modules/killable": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/killable/-/killable-1.0.1.tgz",
@@ -11381,6 +11356,14 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/klaw": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/klaw/-/klaw-1.3.1.tgz",
+      "integrity": "sha1-QIhDO0azsbolnXh4XY6W9zugJDk=",
+      "dependencies": {
+        "graceful-fs": "^4.1.9"
+      }
+    },
     "node_modules/lcid": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/lcid/-/lcid-2.0.0.tgz",
@@ -12568,7 +12551,6 @@
       "version": "1.44.0",
       "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.44.0.tgz",
       "integrity": "sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg==",
-      "dev": true,
       "engines": {
         "node": ">= 0.6"
       }
@@ -12577,7 +12559,6 @@
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@@ -36704,6 +36779,14 @@
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@@ -38677,6 +38757,11 @@
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+      "integrity": "sha1-nnhYNtr0Z0MUWlmEtiaNgoUorGw="
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@@ -39431,8 +39513,7 @@
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@@ -39803,8 +39884,7 @@
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@@ -39836,8 +39916,7 @@
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@@ -41670,6 +41748,14 @@
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diff --git a/frontend/package.json b/frontend/package.json
index d5d63d2..a218017 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -29,6 +29,7 @@
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     "bootstrap": "~4.3.1",
     "jquery": "3.5.1",
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     "ngx-logger": "4.1.9",
     "popper.js": "1.16.0",
     "rxjs": "^6.5.5",