many changes:
- changed jquery to 1.11.
- added payoff to gui (beta)
- changed lastactivities css
- changed imprint layout, depends on rights
- added select/unselect button to addjob
- optimized footer
- added jquery.bpopup.min.js to js-assets
- overworked task-form
- added coins to last activities
Merge branch 'master' of https://github.com/eusi/wg-organizer