fix registration page, only show volunteering tab if option is enabled for the conference
erase word rating, no bold
Fix view of questions in Registrations
show title of supporter level only if level exists
Move events stats in Statistics, add ticket distribution
Merge pull request #35 from differentreality/fix_conference_registration_after_questions

fix registration page
Merge pull request #36 from differentreality/fix_rating_text

erase word rating, no bold
Merge pull request #37 from differentreality/questions_scrolling

Fix view of questions in Registrations
Merge pull request #38 from differentreality/supporters_title_error

show title of supporter level only if level exists
Merge pull request #41 from differentreality/stats_update

Move events stats in Statistics, add ticket distribution
Update gems, use d3 gem, initial bootstrap v3 port
Implement more embed code
Supported Media Files:
- Youtube
- Vimeo
- Instagram
- Flickr
- Slidershare
- Speakerdeck

close #26
Merge pull request #46 from ChrisBr/implement_more_embed_code

Implement more embed code
* Update devise to latest version
* use letter_opener for mails in development
* bring back the flash
* fix redirect loop for logging in
* move all mailer/devise settings to config/config.yml
Use user_registration_path instead of hardcoded /accounts for deployments into sub-directories...
Merged master from upstream, local changes