bumped fullcalendar to 1.6.4
replaced sass with less, because bootstrap is based on it
Merge pull request #471 from leider/master

replaced sass with less, because bootstrap is based on it
Tests for the group name that is displayed on the activity page.
First step towards placing the calculation of an activity's group outside of the jade file.
Now the group for an activity is determined in index.js.
Merge commit '7f8b348943e156eace7b96e81d4a2899e08b9f96' into Link
Merge branch 'Link' of https://github.com/NicoleRauch/NeuePlattform-Implementierung into Link