Show only the parent groups in 'Affected groups'

The list of groups concerned is very long and confusing. Therefore, they should be grouped into parent groups. Example: instead of 7aMa, 7aDe, 7aFr21 simply 7a

Should be configurable via preferences

added part::frontend source::customer type::feature labels

assigned to @hansegucker

created merge request !111 (merged) to address this issue

mentioned in merge request !111 (merged)

closed with merge request !111 (merged)

mentioned in commit 94c3c73d