Added a column in the datacenter backup job overview to see if a job
is enabled or not. Added checkbox to the input panel, which enables
or disables a job.
This closes bug/feature request 492.
This patch was missing in manager6
Using ExtJS6 a browser refresh (F5) do not send the 'show' event which we use to display the store as it did with ExtJS4.
At the momment only for tabs inside the datacenter tabpanel, since node and lxc tabpanels are not yet in manager6/