Adds new service channel and brings back colored radio channels

- Added new service channel for the bartender, chef and botanists
- Added new service headset and service encryption key
![serviceheadset](https://cloud.githubusercontent.com/assets/5224390/3367779/99bd1ebe-fb68-11e3-8667-f9143f6369e9.png)
- Made all three jobs start with said headset
- Cleaned up unneeded leftovers from old mining and QM channels,
including commented parts
- All the departmental channels now use their custom color in the
stylesheet instead of a common one
- Added server for the service channel
- Moved the blackbox recorder to telecomms to preserve symmetry and
because it should be there in the first place
![servicetcomms](https://cloud.githubusercontent.com/assets/5224390/3367789/b9717f0c-fb68-11e3-8746-067750cc87d4.png)
- Added spare service headsets, 1 in bar, 1 in kitchen backroom and 3 in
the botany closets

Service channel is light blue, frequency 134.9, shortcut :d.
Also fixes my last derp when correcting the changelog.