Implement consistent admin interface
* Consistent route/model/controller/view layout
* Get rid of unused photos, speakers, dietchoices, social_events controllers
* Drop unused :public from Rooms and :description from CallForPapers
Merge pull request #548 from hennevogel/feature-admin-view

Implement consistent admin interface
Better scroll handling for the venue map
We don't use the JqueryUI timepicker anymore
Get rid of the schedule controller
Fix glyphicons, suse-icon and remove unused fonts
Help with date selection in the datepickers
Create some DifficultyLevels by default
Various ability fixes and clarifications for guests/users
validate cfp start_date before end_date and end_date before conference.end_date
add username for mock credentials of openid in development
an error
flash alert to flash error
an error spec
validate track name, render instead of redirect for campaigns, fix view for new sponsor
campaign spec
remove event_attachments table
Merge pull request #557 from differentreality/wording_styling

Wording styling
sign in user after confirmation
rubocop styling