Delete empty files from OOZIE-1524

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1525127 13f79535-47bb-0310-9956-ffa450edef68
OOZIE-1468 Add created time column in WF_ACTIONS and SLA tables (rohini)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1525128 13f79535-47bb-0310-9956-ffa450edef68
OOZIE-1529 Disable job DAG display for workflow having huge actions (puru via rohini)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1525167 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk