Added entity manager for requirement model. Update is not yet complete. Tim C and David worked on it.
Merge branch 'dev' into dev-feature-EntityManager

Conflicts:
	RequirementsManagement/.classpath
Committing entity manager for RequirementModel. Tim C and David.
Merge branch 'dev' into dev-feature-EntityManager
Fixed error in count function.
Finished update function. It needs to be redone, more in the manner of the one in DefectTracker, but it should work for now.
Merge branch 'dev-feature-EntityManager' into dev