Merge pull request #844 from NicoleRauch/master

Removed GDCR and improved color checking of groups
Layout tweaks
Merge pull request #845 from leider/master

Layout tweaks in SoCraTes App
first version of registration form
refactoring the form jade file
more tweaks in registration form
change the background color of menu button in small views
Merge pull request #846 from leider/master

first version of registration form