Test on Ruby 2.1.1

The current stable version of Ruby is 2.1.1 so gollum should be tested there.
Update version to 3.0.0
Fix locale warning
Fix utf8 test
Clean up tests. Remove templates
Format code
Update css
Format css
Use FontAwesome 4.0.3 for anchor links
Fix CSS to match github
Merge pull request #817 from bootstraponline/test_fixes

Use FontAwesome for anchor links. Fix tests
Update gemspec dependencies
Use SVG badges
Add mocha development dependency
Add publish alias. Fix rake release
Release 3.0.0
Add font awesome link
Fix configurable options

Noticed most of these were broken, guess for some reason they're not appearing as part of the wiki object anymore