improving concurrency in files
Local paginated cluster was implemented without tests.
Additional local page tests were added.
Merge remote-tracking branch 'nuvolabase/master'
first version of 2q was implemented and tested
Tests for create/read record for paginated cluster were added.
Minor performance improvements
Fixed bug about out of transaction scope for reload()
Serialization: fixed bug on serialization in case of OMVRBTreeRIDSet type
Improved exception message when a class cannot be created because TX is active
Avoid to transform OMVRBTreeRID serialization mode during TX
Merge branch 'master' of https://github.com/nuvolabase/orientdb
JS driver: fixed authentication problems
Studio: fixed nasty problem with query history when text contains "
Fixed issue #1411 about the new syntax in SQL insert, update, create edge, create vertex accepting CONTENT as keyword to pass a JSON

Like:
insert into Account content {"name":"Luca"}
and
update Account merge {"name":"Luca"} where name = 'Marko'

This merges the content, while the first one replace it totally
Issue #1404. Additional create/delete/read record tests were added.
Merge remote-tracking branch 'origin/master'
Maven build fix.
Minor: slightly improved performance of common methods
Merge branch 'master' of https://github.com/nuvolabase/orientdb