Update fn_lightFunctions.sqf

Add missing function DZE_getModelName.
Update local_lights_init.sqf

Add requirement for a running generator and remove lights if generator is switched off.
Create local_lights_off.sqf

Add requirement for a running generator and remove lights if generator is switched off.
Update local_lights_init.sqf

Comment out debug player hint.
Merge pull request #526 from andgregor/master

Update fn_lightFunctions.sqf