Refactored Graphiti EditPart Implementation
Fixed creating PictogramContext
Added missing dependency due to change of TP. Fixes #805
RedDeer 0.6.0 release

All versions are now set to 0.6.0 for RedDeer release
Add nexus deployment settings for staging

Previously we only added the settings for snapshots, so when I was
trying to release RedDeer 0.6.0, the deploy command failed.
This should fix it. The definition is copied from the jbosstools
parent pom.