CPU-friendlier by lowering fixed redraw rate.

The GUI is still redrawn on other events, such as mouse move, so it still
responds quickly to that. This is just regarding background updates of the
data model, such as when loading thumbnails.

blender_cloud/gui.py

@@ -254,7 +254,7 @@ class BlenderCloudBrowser(bpy.types.Operator):
 
         context.window.cursor_modal_set('DEFAULT')
         context.window_manager.modal_handler_add(self)
-        self.timer = context.window_manager.event_timer_add(1 / 30, context.window)
+        self.timer = context.window_manager.event_timer_add(1 / 15, context.window)
 
         return {'RUNNING_MODAL'}