Bug 424018 - Externalize strings

in org.eclipse.emf.emfstore.internal.client.model.controller package
Bug 424018 - Externalize strings

in org.eclipse.emf.emfstore.internal.client.model.filetransfer package
Bug 424018 - Externalize strings

in org.eclipse.emf.emfstore.internal.client.model.exceptions package
Bug 449486 - Merge fuzzy and fuzzy.emf bundles 

Fixed imports in BigMutationTests
Bug 450069 - OperationRecorder emits CreateOperation for subelements
that are contained in already deleted elements

Fix + Test, also modifier deleteOutgoingCrossReferencesOfContainmentTree
to only unset all references at the end instead while iterating through
allEObjects

Enabled OperationReverseTest