using individuals in timetableManagement
error output added
Merge branch 'development'

Conflicts:
	app/controllers/LabworkManagementController.scala
	app/utils/SemesterDatesGenerator.scala
labworkupdatemodel added
visibility variable removed
Merge branch 'master' of https://github.com/FHK-ADV/lwm into development

Conflicts:
	app/controllers/LabworkManagementController.scala