Artwork cache is never wiped, leading to infinite growth

We need to make sure the DB is always correctly initialized before we
trigger any action. When running the scanner, this had not happened
before wipe was called, thus skipping this task.
Merge branch 'public/7.7' into public/7.8
Remove log statement
Merge branch 'public/7.7' into public/7.8
Merge branch 'public/7.8' into public/feature/imageproxy