- removed .php from a href
- updated play to 2.1.5
navbar will now stick to bottom, even if page has not much content
formatting
uncommented: see:

http://matthewjamestaylor.com/blog/keeping-footers-at-the-bottom-of-the-page
basically a reformatting of the code (automatically reformatted by IntelliJ)
added videos to gitignore
Merge branch 'feature/first-improvements' into develop
another refactoring commit
Merge branch 'feature/users' of https://github.com/pakohan/de.htwg.seapal.play into feature/users

Conflicts:
	app/de/htwg/seapal/web/views/main.scala.html