Added basic range indicator to target list.

Partially addresses RemoteTechnologiesGroup/RemoteTech#2. Indicator does not yet support multiple omni bonus or root range model.

Also renamed IAntenna.Radians to IAntenna.CosAngle, to prevent future programming errors.
Merge pull request #30 from Starstrider42/rangefinder

Rangefinder
First draft for TargetInfoPopup
merge
Moved from RT2 to RT Folder
Resolved conflict
commented strastriders code
Merge remote-tracking branch 'origin/master' into rangefinder
Draft update
Final commit of the rangefinder
Merge remote-tracking branch 'origin/rangefinder' into 1.6-rangefinder

Conflicts:
	src/RemoteTech/Modules/ModuleRTAntenna.cs
	src/RemoteTech/Modules/ProtoAntenna.cs
	src/RemoteTech/RangeModel/RangeModelExtensions.cs
	src/RemoteTech/RemoteTech.csproj
	src/RemoteTech/UI/NetworkCone.cs