OOZIE-1562 Allow re-run of actions of killed coordinator (shwethags via virag)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1536795 13f79535-47bb-0310-9956-ffa450edef68
OOZIE-1542 When extjs isn't installed, the web UI is unhelpfully blank (rkanter)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1536803 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk