Added character model

REF T6 Make a character creatable
Documenting private and protected methods with yard
Auxiliary tool
Documentation
Documentation
Updated Rails to latest version in 3.2 branch.
Display a message even if there are no published news.

I also removed dummy text that was needed for setting up the scrollbar
earlier.
Removed unnecessary MIME-Type
admin user has a nick (admin) assigned now
A user can edit his own profile now
Merge branch 'feature/edit_user'