remove unused TEMP_VIEWING frame flag
make camera positioning relative to frame only

Conflicts:
	src/Camera.cpp
	src/Camera.h
	src/DeathView.cpp
	src/WorldViewCamera.cpp
expose camera frame, its needed for object projections

Conflicts:
	src/WorldView.cpp
move ship-specific positioning/orientation up into the controllers
restructure WorldViewCamera as CameraController. only Internal done so far

Conflicts:
	src/CameraController.cpp
	src/CameraController.h
	src/WorldView.cpp
convert external and sidereal cameras to controllers
allow a single body to be excluded from the camera draw
Separate station definitions from the model files
Create definitions for all usable stations
Allow Models instead of LMRModels with stations
Clean up
Limit specular exponent to the good old 0-128 range
Merge remote-tracking branch 'luomu/specexp'
Run space station functions in a separate lua context
Handle missing model material definitions
Merge remote-tracking branch 'luomu/loader-fixes'
doc version bumps for 30
script to prepare release changelog
pass -rpath to the linker in a (hopefully) more crossplatform-friendly way. fixes #1921
Xcode update after alpha30 release