updated io classpath
libs for knip.io rebuild and re-added, after removing all libs (to make sure that removed dependencies are also removed from the classpath)
Fixed minor bug in tracking

- more major than minor, but fixed anyway. positions were calculated
wrongly
added ome-xml to export in knip.io
Print stack trace if something goes horribly wrong in ReadFileImgTable.
Merge branch 'master' into imgsaver,
redid merge from last real commit after previous merge produced build errors

Conflicts:
	org.knime.knip.io/.classpath
	org.knime.knip.scifio/.classpath
	org.knime.knip.scifio/META-INF/MANIFEST.MF
	org.knime.knip.scifio/build.properties