Purge and fully reload charts on OpenGL state change.
Correct chart outline colour to GREEN for all vector charts except cm93
improve compression logic
Merge remote-tracking branch 'upstream/master' into optimum

Conflicts:
	src/options.cpp
greatly optimize route drawing bounding box tests
fix logic in bounding box tests
Optimize world background chart
optimized bounding box out test
optimize bounding box tests
fix typo
workaround for buggy intel driver
minor opengl optimizations with possible bug fix
turn off profiling