New UI changes(tags, categories, authorisations, module index…)

To run:
  - ruby lib/remove_old_tags.rb DB_NAME
  - rake new_ui:migrate_tags
  - rake new_ui:migrate_categories['APP_KEY,''MODEL_NAME'] (check new_ui.rake for more details)

Gemfile

@@ -46,7 +46,8 @@ gem 'sinatra'
 gem 'sprockets'
 gem 'social-share-button'
 
-gem 'tinymce-rails'
+gem 'ckeditor_rails'
+# gem 'tinymce-rails', "~> 3.5.8"
 gem 'therubyracer' if RUBY_PLATFORM.downcase.include?("linux")
 gem 'libv8', '~> 3.11.8' if RUBY_PLATFORM.downcase.include?("linux")
 gem 'mongoid-encryptor', :require => 'mongoid/encryptor'