CRAFTERCMS-296: js error in all browsers, leads to a pop-up in IE 10

Only render a module's content if there's an existing configuration
for it (set in site-config.xml).
Merge remote-tracking branch 'david/master'
CRAFTERCMS-232: wrong status icon for "submitted & locked" state

"Submitted & Locked" status icon doesn't display correctly in
contextual nav & dashboard widget.
CRAFTERCMS-186: large image breaks Image Browse styles
CRAFTERCMS-186: large image breaks Image Browse styles
CRAFTERCMS-300
Issue was caused by sending folder path in bulk go live operation.
CRAFTERCMS-303
Added cleanup of deployment tables on delete site action.
CRAFTERCMS-323: Hide 'Schedule' and 'Go Live' when a content is locked

Hide 'Schedule', 'Go Live' and 'Submit to Go Live' when a content is
locked for edit.
Merge remote-tracking branch 'david/master'