Issue 50696 - Fix Allowed and Denied Ciphers lists - WebUI
    
    Description: When we add a cipher to an Allowed list we should
    not be allowed to add the same cipher to a Denied list.
    Also, show a warning when we do an action which requires a restart.
    
    https://pagure.io/389-ds-base/issue/50696
    
    Reviewed by: mreynolds (Thanks!)