Before grooming, check MGNLCAT-184 if some more general app migration tasks were not added which would make this description outdated

Before planning, make sure there are no other open tickets left in migration epic!**

• ensure all integrated feature branch tickets have a fixVersion
• migrate the feature branch to master
• add migrated app info to release docs
• update respective entry https://wiki.magnolia-cms.com/pages/viewpage.action?spaceKey=DEVINT&title=Migration+of+Magnolia+stock+apps+to+M6