SC Stupid Sized Map Update

Or how Woodrat spent too long on something that was supposed to be simple.

- Addition of a Explorer Radio Channel and headsets.
- Explorers and Search and Rescue job slots added
- Adjustments to the pilot job including getting rid of the flatcap
- Map fixes, adjustments, (including signs pointing to cryo) planetside side map additions splitting up of the wilderness into two area sections
- Disabled lighting on the arrivals shuttle area once it is docked with the station, should help with the whole issue of lighting bugging out and having dark space
- Fixed EMS jacket missing icons
- Fixed Research signs being missing for some reason, addition of directional signs for cryo
- Addition of a Search and Rescue Winter coat
- Probably a dozen other small bug fixes I forgot, and bug additions

Tested, seems fine. At least in short tests.

code/controllers/communications.dm

@@ -119,6 +119,7 @@ var/const/MED_FREQ = 1355
 var/const/SCI_FREQ = 1351
 var/const/SRV_FREQ = 1349
 var/const/SUP_FREQ = 1347
+var/const/EXP_FREQ = 1361
 
 // internal department channels
 var/const/MED_I_FREQ = 1485
@@ -137,6 +138,7 @@ var/list/radiochannels = list(
 	"Raider"		= RAID_FREQ,
 	"Supply" 		= SUP_FREQ,
 	"Service" 		= SRV_FREQ,
+	"Explorer"		= EXP_FREQ,
 	"AI Private"	= AI_FREQ,
 	"Entertainment" = ENT_FREQ,
 	"Medical(I)"	= MED_I_FREQ,
@@ -181,6 +183,8 @@ var/list/DEPT_FREQS = list(AI_FREQ, COMM_FREQ, ENG_FREQ, ENT_FREQ, MED_FREQ, SEC
 		return "supradio"
 	if(frequency == SRV_FREQ) // service
 		return "srvradio"
+	if(frequency == EXP_FREQ) // explorer
+		return "expradio"
 	if(frequency == ENT_FREQ) // entertainment
 		return "entradio"
 	if(frequency in DEPT_FREQS)