Enhance dialog api

src/packages/CodePad/coffees/CommandPalette.coffee

@@ -2,7 +2,8 @@ class CommandPalette extends this.OS.GUI.BasicDialog
     constructor: () ->
         super "CommandPalete", CommandPalette.scheme
         
-    init: () ->
+    main: () ->
+        super.main()
         offset = $(".afx-window-content", @parent.scheme).offset()
         pw = @parent.scheme.get("width") / 5
         @scheme.set "width", 3 * pw

src/packages/MarketPlace/dialog.coffee

@@ -19,7 +19,9 @@
 class RepositoryDialog extends this.OS.GUI.subwindows.SelectionDialog
     constructor: () ->
         super()
+        
     main: () ->
+        super.main()
         @list = @find "list"
         $((@find "btnOk")).hide()
         @list.set "buttons", [

src/packages/Setting/VFSHandle.coffee

@@ -20,7 +20,8 @@ class VFSSettingDialog extends this.OS.GUI.BasicDialog
     constructor: () ->
         super "VFSSettingDialog", VFSSettingDialog.scheme
     
-    init: () ->
+    main: () ->
+        super.main()
         $(@find("txtPath")).click (e) =>
             @openDialog("FileDialog", {
                 title: "__(Select a directory)",