made global paths work at home too

made global paths work on any computer with minimal messing around.
Merge branch 'from_images' of https://github.com/diabolique-/RedshiftFinding into from_images

Conflicts:
	PhotoZ/files/Cluster.pyc
	PhotoZ/files/SExtractor.pyc
	PhotoZ/files/functions.pyc
	PhotoZ/files/global_paths.pyc
	PhotoZ/files/other_classes.pyc
	PhotoZ/files/plotting.pyc
	PhotoZ/files/read_in_catalogs.pyc
	PhotoZ/files/sdss_calibration.pyc