* Marc/ticket/12150:
[ticket/12150] Use correct license URL in prune shadow migrations file
[ticket/12150] Remove 'after' for columns from migrations file
[ticket/12150] Update schema files for prune shadow topics
[ticket/12150] Use log service instead of add_log() function
[ticket/12150] Use shorter column names for prune settings
[ticket/12150] Add functional tests for pruning shadow topics
[ticket/12150] Add missing space to query for shadow topics
[ticket/12150] Add missing prune settings variables in acp_forums
[ticket/12150] Add file and caller for pruning shadow topics
[ticket/12150] Add prune columns to schema files and migration file
[ticket/12150] Add options to acp