Merge pull request #121 from lilliealbert/master

Add link to GitHub issues to nav bar
Remove vol skills from event show page
Modified page header markup to not conflict with flash msgs

Increased width of textareas
Upgrading Rails to 3.2.13
Default session RSVP checkboxes to checked
update to ruby 2.0
Update to capybara2.

  Update related gems and add capybara-screenshot.
Update Ruby in Gemfile to persuade Heroku to use 2.0
Update bootstrap script to reference Ruby 2.0 and better check Meetup creds
Improve confirmation email to actually mention Bridge Troll
Give the bridge troll a nicer Email Name
Improve event creation form a little
Remove 1.9.3 from the builds tested by Travis
rsvp form allows user to request childcare
Do not show Sessions section in RSVP form for single-session events.

Users are automatically RSVP'd to the single existing session for these events.
Destroy event session RSVPs when event sessions are destroyed
Add confirm to unvolunteer button
Update README.markdown
Remove declared widths on .container so they have responsive bootstrap sizes

(940px, 1170px, etc depending on screen width)
Organizers can 'un-checkin' volunteers from sessions