Long time, No Code

Some Updates:
* Rails Update to 4.1.7
* Simple Form Update to 3.1.0.rc
* Bootstrap Update to 3.3.0 (and official Gem)
* Font Awesome Update to 4.2.0
* Use Ruby 2.1.4

* Do not require to have specific Settings
* Some adjustments in the footer


@timbuchwaldt Plz review :smile: