moves dependency to new gl-program class to starfield/Config.h (where all
the other dependencies to components outside the 'starfield' folder live)
and removes dependency to obsolete OGlProgram.h
removes obsolete OGlProgram.h, moves utility macro for logging gl errors to Log.h
tidies up UrlReader component
comments out logging, after testing all is fine
Merge branch '19188' of git://github.com/tschw/hifi
Merge branch '19165' of git://github.com/tschw/hifi
clarifies some names
clarifies some names
adjusts naming and formatting of class definition
Merge branch 'master' of git://github.com/worklist/hifi
adjusts names
further adjusts naming
puts member variables last but first
revises log display
adds comments
revises oscilloscope
Merge branch 'master' of git://github.com/worklist/hifi

Conflicts:
	interface/src/Oscilloscope.cpp
fixes improper merge / changes
adds missing include "InterfaceConfig.h" for OpenGL types
refactors logging