Merge branch 'hotfix/61'

Close #61
Merge branch 'develop'

Brings in new responsive design, courtesy of Frank Bruckner!
Added 2.0.7/2.1.0 announcement
Updated for 2.1.0 release

- Added 2.0.7 and 2.1.0 releases to downloads
- Added 2.1 release to manual list
- Added new blog post to home page
Home link wasn't going home...
Changelog fixes

- Allow specifying github OAuth token (so we don't hit rate limits)
- Cannot use routing in urls in posts; hard-coded for now
Better error handling
Fix dropdown

- When on the right-hand side of the screen, it was somehow conflicting
  with the "fork us" banner, which caused it to be unclickable. Made it
  "center" in order to be useable.
Compilations...

- Compiled blog
- Compiled changelogs
- Compiled contributors listings
Merge branch 'releases/2.1.0' into develop

Ready for 2.0.7 and 2.1.0 releases.