Add main window to form menu

Closes #209 (closed)

requested review from @ldam

assigned to @kienle

approved this merge request

added 42 commits

• 8485241a...cd6179c4 - 40 commits from branch master
• abcdf76a - Add main window to forms menu
• e0e93c34 - Update documentation

Compare with previous version

enabled an automatic merge when the pipeline for e0e93c34 succeeds

merged

mentioned in commit 637e8fed