Upstream changes
- Merge branch 'feature/copy-filter' into 'master'
- Fix setting a custom title when cloning a single filter.
- Use 'clone' wording for filter duplication.
- Fix a return type warning in 'Pref_Filters'.
- Prompt for the new filter name when only copying one.
- Add the ability to copy an existing filter.
- Merge branch 'af-comics-dumbingofage' into 'master'
- Add processing of dumbingofage.com images