Closes #2000 - Updates Ruby to version `2.1.5`
Fix link formatting for /styleguide in README
Merge pull request #2126 from danbartlett/patch-1

Fix link formatting for /styleguide in README
Change button text from 'dismiss' to 'remove' and add a ? Fixes #2123
Merge pull request #2127 from danbartlett/dismiss
Clean up trailing whitespace
Mention Shopify as sponsors on the about page
Mention Rackspace as sponsors on the about page
Stores code and filename in a submissions solution
Merge pull request #2129 from LNA/save-incoming-solutions

Stores code and filename in a submissions solution
Delete unused file
Regenerate javascript
Add more data to the invalid attempt notification to bugsnag
Add 'reset key' method on user
Protect against unknown user in iteration endpoint
Automatically add team creator to team
Merge pull request #2131 from pbaisla/issue2091

Automatically add team creator to team
Add comment threads for nits/comments on submission page
Merge pull request #2130 from code-R/comments-for-nitpicks

Comments for nitpicks
fix nit_count when we do db:seed in dev environment