owncloud/core — pull request #6392 by icewind1991 (2013-12-13 12:42:10+00:00)
Title: dont try to register background jobs if we haven't upgraded yet

Prevent exceptions being logged about the oc_jobs table not existing.

Tested by removing the oc_jobs table and triggering an update by decreasing the version number in config.php

cc @PVince81