Build failure fix.
Merge pull request #1973 from davide/develop

Fix minor build issue and complete the fix for #1963
Fixed issue #1938 about supporting graph elements in include/exclude functions
build failure was fixed.
Merge remote-tracking branch 'origin/develop' into develop
Failed tests were fixed.
Fixed english typo
Missed configuration files were added.
Fixed #1938
Added more context variable to track shortestPath function
Fixed issue about out*() functions
Restored last changes to let tests to pass. Final fix will follow up
Renamed file
Issue #1977 was fixed.
Issue with tx managementt in graph sql queries was fixed.
Fixed slow down on unmarshalling huge link sets.
Fixed issue #1982
SQL: fixed graph functions issue with chain call
Fixed issue #1991
Minor: remove extra empty document when expand and no target used at the same time