frontent: fixed creating new entities

data for vz.load should really be an associative array, otherwise setting
data.operation won't work.
fixed public channel adding

was broken due to a change in jquery-ui, see
http://jqueryui.com/upgrade-guide/1.9/#deprecated-show-event-renamed-to-activate
Merge pull request #41 from jahir/master

Fixes for recent commits (vz.load change and jquery-ui update)