fixed bug #2608
Releasing OrientDB Community Edition 1.7.7
fix NPE on sbtree clear.
Merge branch '1.7.7' of github.com:orientechnologies/orientdb into 1.7.7
Merge branch '1.7.7' of https://github.com/orientechnologies/orientdb into 1.7.7
Update history with 1.7.7
Switched to OrientDB Community 1.7.8-SNAPSHOT
Distributed: fixed issue #2576 about readQuorum
Distributed: node is online after it completes the pending queue of startup.
Distributed: fixed problem on startup
Fixed issue #2610
Fixed issue #2614
fix issue with network record serialization != database record serialization.
fix  network serialization: csv db to binary network.
Fixed bug on Studio for empty in/out edges
avg function: small refactoring to improve code reuse and fix possible
ArithmeticException on non distributed executions
Merge pull request #2625 from fabriziofortino/develop

avg function: small refactoring to improve code reuse and fix possible
Minor: let OJSONReader accepts Reader
removed code not used anymore from binary serialization.
Fixed minor issues related to ETL usage