Fixed bug where "description" metadata would overwrite "subject"
metadata on CSV import.
code cleanup

Change-Id: Ie6d0c048722fedfa439383c96abbdf1ee7615a1b
Changed keyType of QKeys generated by axis plotters.

Change-Id: I07b3497d1dc3cf4fe564b3fe077ec30bf833dc84
zOrder setting now uses -1 and 1 instead of -Infinity and Infinity.
Merge branch 'master' of https://github.com/IVPR/Weave into aws