hide html symbols
do main event
fix it if main_event doesn't exist
make via helper
Merge branch 'feature/html_symbols_and_main_event' into develop

* feature/html_symbols_and_main_event:
  make via helper
  fix it if main_event doesn't exist
  do main event
  hide html symbols

Conflicts:
	app/views/layouts/web/shared/_sidebar.html.haml