CRAFTERCMS-167
Fixed bug that was causing preview synchronization to stop working
Merge remote-tracking branch 'upstream/master' into CRAFTERCMS-167
Merge remote-tracking branch 'origin/CRAFTERCMS-167'
Merge remote-tracking branch 'upstream/master' into CRAFTERCMS-175
CRAFTERCMS-175
Fixed deployment bug for java 1.7
CRAFTERCMS-156: lastModifiedDate created in XML is off by 12 hours

Simplify date conversion method to UTC