ZeissZVIReader: Cope with zero length strings
BaseZeissReader: Store Shape text for all ROI types

Previously, only text for measurement types (i.e. measurement
values) was stored.  Now, store for non-measurement types as
well.
merge dev_4_4 -D org -I include -E exclude: PR 379 (Fix source code links moved to the scifio-tools foder)
merge dev_4_4 -D org -I include -E exclude: PR 405 (Zeiss ZVI: use coordinates to retrieve the correct plane (rebased onto dev_4_4))
merge dev_4_4 -D org -I include -E exclude: PR 406 (ZVI: Parse ROIs correctly)