Fix and testcase for issue #2307
Fix for issue #1965
Merge pull request #2355 from maggiolo00/develop

updated studio app
Fix for issue #2061
Merge branch 'develop' of github.com:/orientechnologies/orientdb into develop
Fixed issue #2331
Fixed NPE reported by Steven Tomer on ML
Distributed: fixed problem on create db
HTTP: managed null entry in iterator
Minor: Named rebuild index thread
Minor: avoided logging of all rebuild index for empty indexes
Fixed ugly bug on Object Database and improved performance on class inspection
Fixed issue #2331
Fixed error reported by Rob against distributed update with index
Issue #2237 providing lock free schema
Distributed: Fixed issue on shutting down of server
Distributed: Pulled up getConfigurationMap() to be called by EE agent