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 pull request #390 from joshmoore/rebased/develop/slf4j-fixes

Add slf4j-log4j dependency in the test-suite component (rebased onto develop)
Merge pull request #392 from melissalinkert/logging-docfix

Logging docfix (rebased onto develop)
merge develop -D org -I include -E exclude: PR 351 (Add SPW support to FakeReader)
merge develop -D org -I include -E exclude: PR 380 (Removing ndpi from readers list for fs demo)
merge develop -D org -I include -E exclude: PR 407 (ZVI: Parse ROIs correctly (develop))