Added UCM Node
added ucm to procnodesetfactory
Merge branch 'master' into ucm

Conflicts:
	org.knime.knip.base/src/org/knime/knip/base/nodes/proc/ProcNodeSetFactory.java
cleaned up ucm node, now as UCMOp
Added ImgExt1.java

	* We need to check whether we serialize an ImgView or an Img in ImgExt
	* What may go wrong:
		** Seralize with flatIterationOrder (ImgView on CellImg)
		** Deserialize with CellIterationOrder
Minor Code-Cleanups

	* Formatting
	* Deprecation of unused externalizers
Added ImgExt1
more code cleanup
Adding UCMBoundary as replacement for UCMEdge
Merge branch 'ucm'
Merge branch 'master' into maximumfinder
Merge branch 'maximumfinder' of https://github.com/knime-ip/knip into maximumfinder
Minor code clean-ups