partial commit
Merge pull request #264 from solispauwels/master

fix RouterInteface problem
 widget is sortable
checkstyle
Merge pull request #265 from easy-es/agenda

Agenda
Fixed not null constraint
Merge pull request #266 from stefk/db-fix

Fixed not null constraint
Fixed broken tests
Merge pull request #267 from stefk/test-fix

Fixed broken tests
GUI update
Merge remote-tracking branch 'upstream/master'