optimizing display of admin tables
cleanup
cleanup & UI (login/out)
authentication now via modal dialog
Look of "Anmelden"

Fix for
https://github.com/softwerkskammer/NeuePlattform-Implementierung/issues/
140
Merge pull request #160 from leider/master

UI tweaks in admin tables
more jade components
new credits page
UI tweaks
cleanup and extracting mixins
tweak login box
more UI tweaks
Merge pull request #161 from leider/master

small UI stuff
fix for admin table display
Merge pull request #162 from leider/master

fix für die Admin Tabes
More mixins
formatting only
Date editors in tables & UI cleaning
Merge pull request #163 from leider/master

More GUI stuff
Merge remote-tracking branch 'upstream/master'

Conflicts:
	app.js
	lib/authentication/index.js
	test/activities/activities_test.js
	test/groups/groups_test.js