Search bar and advanced search criteria for #103 & #104
Merge remote-tracking branch 'remotes/origin/Dolphins' into D/feature/#104
Made advanced search filters collapsible
added due date attribute for tasks
Merge remote-tracking branch 'remotes/origin/dev' into Dolphins
Merge branch 'Dolphins' into D/feature/#104
Adapted changed requirements
Merge branch 'Biber' into B/feature/#20
Remove edit button from group index ref #20
show available equipment
remove and add equipment for rooms
look better
add first tests
Merge pull request #143 from hpi-swt2/dev

merge dev into Dolphins
added deadline field for tasks
Merge remote-tracking branch 'remotes/origin/dev' into Dolphins
UI improvements for #104
deadline can now be saved and UI improvement
#102 Feature complete, Tests still missing
Change group views from displaying identity urls to emails