added ParameterKeeperNode
root, class and method derive from parameter keeper
moved parameters related methods from method node to parameter keeper
moved java related methods on the model to JavaUtils
cleanup
added util function to get list of names from collection of nodes
adapted getIndex and getMaxIndex
fixed check for duplicate
GenericOperationAddParameter plus adapted MethodOperationAddParameter +
tests
GenericOperationRemoveParameter + tests
method operation remove parameter + test cases
cleanup
cleanup
Merge branch 'master' of local repository into dev-global_parameters

Conflicts:
	ecfeed/src/com/testify/ecfeed/model/ParameterNode.java
	ecfeed/test/com/testify/ecfeed/testutils/ModelStringifier.java
renamed parameters keeper to parameters parent
created ParametersParentInterface
cosmetics
cleanup
fixed compare function
switched off long taking tests