Implement search, show_basic, show_detail and add_to_fav for theses

test/models/favorite_thesis_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class FavoriteThesisTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end