Implement grouping of projects/anti-patterns

[ppicha]

On the page with selection of projects and anti-patters have them grouped as follows:

1. Anti-patterns

• grouped by labels sourced from the catalogue
• one anti-pattern can appear in multiple groups, thus if checked in one, should be checked everywhere
• the groups to be sorted alphabetically as well as their members within
• the last group (breaking the alphabetical sorting) is "All", where all implemented detections are listed
• each group to have its internal Select All/None option (global one not needed as the "All" group supplements this function)
• the structure is 2-level max (group-members)

2. Projects

• grouped by "super-project" (a concept from the DB for which a new view needs to be created)
• each project can appear in one group at most
• the groups are sorted alphabetically on each level
• the groups are listed first followed by projects not belonging into any group (file system parallel)
• each group to have its internal Select All/None option, but there's also a global one
• the structure is multi-level