Add TFAR requirement + teamspeak message on map

Added the TFR requirement object (so people without TFAR running will be
unable to join) - set up to keep frequencies the same for a side (not
100% sure what that does). Also added a message to the map to inform
people about the TS channel.
Merge in changes from mainline.
Change PBO generation script to generate a different name on this branch.
Regenerate & Rename PBO