ui: acl: add improved permission selector

taken mostly from PVE, with adaption to how PBS does things.
Main difference is that we do not have a resource store singleton
here which we can use, but for datastores we can already use the
always present datastore-list store. Register it to the store manager
with a "storeId" property (vs. our internal storeid one).

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

www/window/ACLEdit.js

@@ -7,6 +7,7 @@ Ext.define('PBS.window.ACLEdit', {
     method: 'PUT',
     isAdd: true,
     isCreate: true,
+    width: 450,
 
     // caller can give a static path
     path: undefined,
@@ -25,7 +26,7 @@ Ext.define('PBS.window.ACLEdit', {
 
     items: [
 	{
-	    xtype: 'pmxDisplayEditField',
+	    xtype: 'pbsPermissionPathSelector',
 	    fieldLabel: gettext('Path'),
 	    cbind: {
 		editable: '{!path}',