Nya banor till Crysis Wars

Fixes:
* Fixed: Custom assets in downloaded maps will now be loaded correctly

Updates:
- Updated: New Power Struggle Map 'Frost'
The frozen jungle environment finally makes it into Crysis Wars! Make
the best of your environment in this infantry-focused map which provides
incredibly tight match-ups. Enjoy the new version of the small prototype
factory, featuring a third, sneaky entrance for more tactical encounters.

- Updated: New Team Instant Action Map 'Savanna'
Experience a new full vehicle Team Instant Action map, in a different,
never-seen before setting of the African savanna. Will you be able to
take advantage of the sniper positions or rule the map from the air?
Use the destroyed train as an efficient cover or roam around the map
with heavy tanks, this is your choice for fast, heart-pounding action.