3.0.0 map and code

In preparation for the Map Rumble sometime this week, I am putting tg3.0.0 map into the codebase so it's easier for SoS to organize. Wjohnston should be pushing his to the codebase sometime soon as well. These are not permanent additions, the results of the Rumble will determine which maps get removed from the codebase.

Contained in this is the .dmm itself, objects added to the code and associated icons.

A slightly outdated picture of the map is here: http://www.ss13.eu/phpbb/viewtopic.php?f=27&t=1190&p=56696#p56599