the intial value of the node selector is null,
but when the store is loaded, it becomes an empty array
this triggers the 'dirtychanged' event and causes
the edit windows to enable the OK/Submit Button,
even when no change is made
this fix sets the default value to an empty array,
which fixes the mentioned behaviour
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
this fixes two problems:
* we were loading the store before the parent ComboGrid class could put
a listener on the load event
* displayField must now be set in class body, take opportunity to move out
what we can of the mega initComponent()
this two fixes allow the HA GroupEdit Window to properly display the
existing members of a HA Group when editing group membership
this also fixes the problem that the method
Ext.ComponentQuery.query() was outputting a warning
since it did not know if it should perform a lookup
for a class name or a xtype
