Removed unused imports.
Slightly improved the Graphiti-Deploy-Synchronization:
Changes made and stored in the DeployView now are updated automatically whenever the diagram is reloaded into graphiti.
Minor change in DeployView (firePropertyChange when saving constraints).
Doesn't seem to do anything, but I'm still leaving it there for further research.
Might have to change resource information and the saving process in CreateBlockFeature.
Only added comments on possible strategies, nothing implemented yet. Please do not alter anything unless you can solve the whole problem.
Added UpdateBlockFeature, forgot to add earlier.