Hierarchical dialog: Put validation button on the right to match convention

application/ui.extkeywidget.class.inc.php

@@ -1027,6 +1027,10 @@ $('#dlg_tree_$this->iId').dialog({
         $(this).css("max-height", parseInt($(window).height()*0.7)+'px');        
     },
 	buttons: [
+		{ 
+			text: "$sCancelButtonLabel", 
+			click: function() { $(this).dialog( "close" ); } 
+		},
 		{ 
 			text: "$sOkButtonLabel",
 		   	class: "ibo-is-primary",
@@ -1034,10 +1038,6 @@ $('#dlg_tree_$this->iId').dialog({
 				oACWidget_{$this->iId}.DoHKOk();
 			},
 		},
-		{ 
-			text: "$sCancelButtonLabel", 
-			click: function() { $(this).dialog( "close" ); } 
-		},
 		],
 
 	resizeStop: oACWidget_{$this->iId}.OnHKResize,