Fixed concurrency problem on open(): exclusive lock is used only the first time a storage is open.
Issue #2150 optional crc code for each record was added.
Merge remote-tracking branch 'origin/develop' into develop
Index: Removed locking against put/remove
Fixed scale up and down of shared locks -> exclusive locks to avoid deadlock on indexes (reported by Partner 1)
Issue with wrong db path was fixed.
Restored changes against index lock to avoid concurrency problems
Console: fixed minor issue on backup and restore