NXP-10753: Register transaction synchronization only if transaction is active
NXP-10780: allow save without auto-checkout
NXP-10802: allow to append schemas, facets and prefetch to existing Document Types
NXP-10725: make checkin/checkout events consistent
NXP-9660: Support mssql 2012, don't try to delete system table, default collation is case sensitive
NXP-10813: Support paging on SQL Server 2012
NXP-10807: Build shallow events for post-commit listeners  after synchronous listeners execution
NXP-10819: DocumentModel.refresh must also refresh dynamic facets
NXP-10813: Support paging on SQL Server 2012 bis
NXP-10819: DocumentModel.refresh must also refresh dynamic facets
Merge branch 'master' of github.com:nuxeo/nuxeo-core into FEATURE-NXP-10450-THUMBNAIL