Explicitly set height for #page-footer contents.

This should prevent anything below the footer, at least unless it wraps, which
should be prevented by the explicit font-size and width.

Fixes
https://trello.com/c/jlkmVAKo/168-bug-logo-in-der-leiste-abgeschnitten-chrome
Allow trusted userprofiles to have any avatar in the avatar directory.

We have to validate UserProfile->image ourselves in clean(), as it is dependent
on other values of the model, namely the trusted flag.
Don't overwrite the UserProfile->image field when getting ""

This fixes the bug which resets the user's avatar when editing the profile if it
is not one of the freely available ones.
fix schedule formatting for glitch
new frontpage article
Added der bote quest to arg page
Merge remote-tracking branch 'upstream/master' into new_quest_types_v2