typo in watershed node description
node docu and error messages in voronoi-seg node
SlidingWindowOperationNodeDialog: Node description
Merge branch 'master' of https://github.com/knime-ip/knip
Fixed error message in GaussNativeType
first improvements in exception handling
Better error message in SubsetSelection
Merge branch 'master' of https://github.com/knime-ip/knip
Feature Calculators: Enhanced Documentation

	* Image Feature Node now has a documentation
	* Image Segment Features/Segment Feature now consistent where applicable
Missing value handling in merge node
Merge branch 'master' into anisotropic_dialog_cleanup

Conflicts:

org.knime.knip.base/src/org/knime/knip/base/nodes/filter/SlidingWindowOp
erationNodeFactory.java