-removed winter theme

- replaced gift boxes
- smaller changes and additions

...

Small Xmas Update!

- changed map scenery to snow
- overhauled weapons spawn
- support for 4 weapon addons:
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=253737175
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=609578386
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=246458792
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=294564108
- added some new textures
- gifts, gifts, gifts!

- fixed: traitor door can no longer be opened by crowbar
- added: steam makes noise
- replaced: some brush models by custom prop models (windows, meatpete cardboard, monitorwall etc...)

added canals between tenement and factory
added a traitorroom with teleporter, observation console and a steamtrap
added a lot of details and eastereggs
added some custom textures
fixed hdr intensity changes
fixed some smaller bugs
changed 3d skybox to a modest, more consistent cloud dome