* hotfix/2.8.1:
Fix wrong config include
v2.9.0 release
v2.9.0 Maintenance release/2.9.0

* release/2.9.0:
Merge branch 'release/2.9.0' into develop
Add Drag&Drop of groups
Fix typo in JS code
Merge branch 'hotfix/2.9.1' into develop

* hotfix/2.9.1:
  Fix typo in JS code
Merge remote-tracking branch 'upstream/develop' into mydevelop