Merge pull request #9 from differentreality/admin_events

Add stats about submissions
add getdate and getdatetime to application helper for formatted date/time
update model volunteer and rearrange volunteer page
update conference model with volunteering options
Merge remote-tracking branch 'differentreality/gemfile' into volunteering
volunteering admin options
new schema
fix confict
Add Volunteers link in admin panel
Add Volunteers route
Fix migrations
fix migrations
Merge branch 'format_date_helper' into volunteering
show volunteer button in registration page
volunteer fixes
show only social events of current conference
Merge branch 'master' into volunteering
Merge branch 'master' into myeverything
merge volunteering into everything
fixing merge conflicts