Bugfix: OcclusionGroupTests - hookup serverMgr to Network.Server
- clarified expectatios for TestVisibilityNear, will need to do more of it for sleepers
They were unlinked, sso player's weren't fully transitioning to the sleeper state (no subscriber, no connection), letting more tests pass than expected
Tests: ran unit tests, 23/226 fails, old logic started to fail as well