refs #728 add a features spec for the labels
refs #732 add a features spec for top messages
refs #725 add a features spec for admin users list
refs #736 Missing top-level class documentation comment.
refs #713 modified the helper file by rubocop
refs #720 Use && instead of and.
Use || instead of or.
refs #719 Line is too long.
refs #713 Do not use parentheses for method calls with no arguments.
refs #539 remove the admin.rb
refs #737 Align the elements of a hash literal if they span more than one line.
refs #737 Align the elements of a hash literal if they span more than one line.
refs #713 the other rubocop indications, for models
refs #713 refectering for the model files
refs #713 refactering by rubocop