Resolve "Frontend improvements"

Closes #103 (closed)

added 6 commits

• 349af699...a9cbc9be - 3 commits from branch master
• d768524c - Feedback visibility can be toggled when correcting
• ecf4bcc8 - Correction Comp on Subscr. WorkPage is sticky
• 4e5ad4a4 - More Options for searching feedback / Incl. RegEx!

Compare with previous version

enabled an automatic merge when the pipeline for 4e5ad4a4 succeeds

merged