Add possibility to add an append-icon to the subject chip

assigned to @hansegucker

added 14 commits

• 844ea4ac...aa4f1ce2 - 13 commits from branch master
• d18c5f48 - Add possibility to add an append-icon to the subject chip

Compare with previous version

enabled an automatic merge when the pipeline for d18c5f48 succeeds

merged

mentioned in commit 9a289abc