Exported prior reviews from Gerrit Code Review
Update notes for submitted changes

* Update of SparqlSearchableItemProvider.
Update notes for submitted changes

* Remove applicability test for properties to respect the OWA.
Update notes for submitted changes

* Show label instead of model URI.
Update notes for submitted changes

* Use dedicated model set for clipboard and allow search within complete label.
Update notes for submitted changes

* Change ModelSetItemProvider to extend the ReflectiveItemProvider.
Update notes for submitted changes

* Prevent infinite loops do to invalid usage of komma:contains.
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* Introduce a means to provide a default adapter factory and generate URIs for new elements.
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* Remove unnecessary calls to setIncludeInferred.
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* Improve searching and peformance of item providers.
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* Use IResource instead of IObject where possible.
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* Allow adaptation of individual RDF properties.
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* Removal of properties with cardinality 1.
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* Fix removal of properties with cardinality 1.
Update notes for submitted changes

* Improve thread safety, rework copy commands and cleanup.
Update notes for submitted changes

* Reuse unit of work for clipboard and cleanup of code.
Update notes for submitted changes

* Fixed bug in item provider.
Update notes for submitted changes

* Simplified creation of viewer notifications.
Update notes for submitted changes

* Thread-safe implementation of adapter cache.
Update notes for submitted changes

* Move content proposal and editing support to ui-independent edit plugin.