[travis-ci] Set language to ruby.
[travis-ci] Move forem dummy_app setup to before_script.
[travis-ci] CI against Ruby 2.0
[travis-ci] Switch priority of build environments.
[travis-ci] Initially allow test failures on 2.0 while it's unpredictable.
Added support for decorators and moved faux 'extensions' to decorators instead.
Merge pull request #367 from radar/decorators

Added support for decorators and moved faux 'extensions' to decorators instead
Updated build status icon.
Change Engine.root to match the actual root of Forem and not the lib directory.

Fixes #366
Require any 4.x version but at least version 4.0.9 of friendly_id.

Fixes #366
Update to newest decorators to allow more Rails versions.

Fixes #369
Updated RefineryCMS to Refinery CMS
Fix indentation on 'Either way...' line in install generator
Made installer more obvious
Don't send a notification for a Subscription which does not link to a user

Fixes #375
Missing keys from 'es' locale
Dependencies update
Don't send a notification for a Subscription which does not link to a user

Fixes #375
Translate all the forums!!! [es]

Fixes #378
Fix spelling and common uses