Social Backlinks 2.0.31

Social Backlinks 2.0.31 is available fixing a lot of stuff.

Social Backlinks version 2.0.31

Fix sh404SEF url sometimes wrong
Fix Multilingual site URLs sometimes wrong
Fix nginx as a reverse proxy prevents auto sync
Fix New k2 items are not getting synced
Fix K2 items get created and publish_up field corrupted (regression)
Fix Socket is killed too fast