added default root to admin
Merge pull request #158 from railsgirlslondon/admin_url

added default root to admin
fix weird schema issue
Add Reevoo sponsor image
Add sponsor images for Shutl and Skype
Add Badoo logo to sponsors
Add Unboxed logo to sponsors
Add Explovia sponsor PNG image
Specify Ruby 2.0 in version file
Use stable Rails 4 and rails_12factor for Heroku
Use postgres locally for consistency
Remove deprecation warnings
Update Rails, and use Postgres in local env
* updates:
  Remove deprecation warnings
  Use postgres locally for consistency
  Use stable Rails 4 and rails_12factor for Heroku
Tidy up the dashboard
make workshop data same as weekly data
Rename weeklies to meetups
Merge pull request #159 from railsgirlslondon/dashboard-tweaks

Dashboard Tweaks
Use table for coach list, and glyphicons for buttons
Sort coaches by surname
Merge pull request #161 from railsgirlslondon/coach-tweaks

Tweak coaches page