Update knip-ij2 according to changes in knip-core

	ImgView/LabelingView moved to imglib2 core
	ImgPlusView was removed
after-id '/' replaced by empty after-id '' to get rid of error message in knime log
New libs
We need to make our preprocessing correct
added required dependency
Updated-Class path settings
Introduced hack for lazy initalization of services
Added several helpers to IJGateway

	* Now also checking for MultiSelection Inputs
Allowing dialog to handle multi selection objects

	* Like selection of a operand in image calculator
Removed annoying Exceptions
added services to get rid of error messages
- Most changes of commit 63e97791a166c63338048977ac378248539bf71e reverted
- for now, assume that imagej provides an input-widget if no (knime) input adapter is available for a certain type (e.g. CalculatorOp for the Image Calculator plugin)
- serialization of module items: use java serialization mechanism if objects implement Serializable, or serialize class name if public default constructor exists, else a module item cannot be serialized and therewith not handled within a knime node
removed wrongly placed group in ijstandarddialog
append column in ij standard dialog works now (settings weren't stored)
Only setting log-level if not previously set.
Splitted IJGateway Services into headless and non-headless
clean-up of services in IJGateway
IJGateway: getHeadlessInstance()
Fixed NPE in IJGateway
removed several warnings + code-cleanup