* Refactor READ ONLY mode in Context and adjust hibernate settings accordingly
* Set Context in READ-ONLY mode when retrieving community lists
* Fix Hibernate EHCache configuration + fix some Hibernate warnings
* Cache authorized actions and group membership when Context is in READ-ONLY mode
* Set default Context mode
* Let ConfigurableBrowse use a READ-ONLY context
* Add 2nd level cache support for Site and EPerson DSpaceObjects
* Added 2nd level caching for Community and Collection
* Fix tests and license checks
* Cache collection and community queries
* Small refactorings + backwards compatibility
* Set Context to READ-ONLY for JSPUI submissions and 'select collection' step
* OAI improvements part 1
* OAI indexing improvements part 1
* OAI indexing improvements part 2
* DS-3552: Only uncache resource policies in AuthorizeService when in read-only
* DS-3552: Additional comment on caching handles
* DS-3552: Fix cache leakage in SolrServiceResourceRestrictionPlugin
* DS-3552: Clear the read-only cache when switching Context modes
* DS-3552: Correct Group 2nd level cache size
* DS-3552: Always clear the cache, except when going from READ_ONLY to READ_ONLY
