1. range overlaps_with: if the second range covers everything, then it
covers me - don't check units
2. shorter output for filetabp repr
reduced_variable.reduce:
1. Handle duplicates returned by filetable.find_files
2. longer error message if filetable.find_files doesn't find anything
Convert brief imports, e.g. "import filetable.py", to full ones,
e.g. "import metrics.io.filetable.py".
Merge branch 'master' of github.com:painter1/uvcmetrics

Conflicts:
	src/python/amwg/plot_data.py