fumbling with GenericGraph
Merge branch 'Refactoring_SDMLib' of https://github.com/azuendorf/SDMLib into Refactoring_SDMLib

Conflicts:
	SDMLib.net/src/org/sdmlib/models/objects/util/GenericGraphSet.java
	SDMLib.net/src/org/sdmlib/models/objects/util/GenericLinkSet.java
	SDMLib.net/src/org/sdmlib/models/objects/util/GenericObjectSet.java