Fixed #1637
Updated Studio with new bookmarks + interruptible commands
Fixed issue #2369
Fixed stale status of JVM on shut down (very rare)
Issue # 1605 hash index operations are logged,  tests are passed.
Working to fix issue #2270
Hash index documentation was added.
Fixed issue #2379, removed also locks in OSecurityShared
SQL: new .hash() method. Fixed issue #2353
Fixed issue #2308
Issue #2381 was fixed.