Foe a map on Game Finder

Concise description:
Specifics/Details:
How this will benefit the site and/or other comments:
- It should be possible to 'foe' a map such that it doesn't come up when creating or searching for new games.
Specifics/Details:
- There are some maps that I don't wish to play, or don't wish to play for a while. It would make it easier to find games if I could ignore certain maps.
- Whilst it's possible to select a subset of the maps with Ctrl-click, I should prefer to be able to select all except a specified few.
How this will benefit the site and/or other comments:
- It will make game selection quicker and less tedious.
- It will help cross-map medal hunters.