Moved compression outside cluster lock
BP: added CLUSTER: prefix in addEdge() to specify a cluster for edges
Enlarged memory for javadocs (on Macosx goes in OOM)
Removed Sonatype OSS snapshots repository

Since there are no more Blueprints snapshot dependencies (see [here](https://github.com/orientechnologies/orientdb/issues/2065)), Sonatype OSS snapshots repository is no longer needed, it just slows down the build.
Merge pull request #2231 from sslavic/patch-1

Removed Sonatype OSS snapshots repository
Fixed issue #1944
Distributed: fixed bug on creation
added OIndexReuseType.OPERATOR
Fixed execution of sql batch script when line ending with \n (script sql works with ;)
Merge pull request #2232 from maggiolo00/custom-indexreuse

OIndexReuseType.OPERATOR
Merge pull request #2233 from kowalot/develop

Fixed execution of sql batch script when lines ending with \n