Fixed small error in previous fix in path for loading files (broken by new launcher)

Fixed path for loading configs (broken by new launcher)
Fixed memory leak caused by not removing callbacks

Thanks to user @JonnyOThan for this:
	Use InternalCam for first person
		Certain graphics mods like EVE and Scatterer rely on the localspace camera for drawing effects like clouds and atmosphere when in low orbit. The existing implementation of pulling the camera's near and far planes closer was resulting in those effects getting clipped

Thanks to user @JonnyOThan for this:
	TTE now works in command chairs

Thanks to JonnyOThan for these fixes:
	hide female heads properly
	camera near/far plane ratio needs to stay consistent 
	Expose near plane distance so other mods can configure it
	bump out the near plane distance a little so that this doesn't limit the far distance so much

Added InstallChecker
Updated AssemblyVersion
Updated for KSP 1.8