Minor Description
The submit button status of refreshing cube is not suitable when the start time is equal or more than the end time.
1. Choose one disable cube, then click the 'Refresh' action, you can see the 'Submit' button is available, refer to 
2. When you click the 'Refresh' action, you can see the invalid warning message, refer to 
So I think the 'Submit' button will be disabled in this situation like the 'Merge' action, refer to 
