First commit. Created rbv_event feature, installs event content type and related stuff. DEPENDENCIES:  calendar, fullcalendar (modules and plugin) Fixes fonzy85vr/retebuonvivere#18, date_ical modules, subpathauto. FIELDS: new field base event_date. VIEWS: added rbv_view_calendar. Added rbv_view_groupcontent to this feature (because we need events to display the panels). FULLCALENDAR: added colors module dependency.