271d33e ui: Use mnemonics for remote-viewer connection UI

Authored and Committed by fidencio 7 years ago
    ui: Use mnemonics for remote-viewer connection UI
    
    Here we added mnemonics for the buttons "Cancel" and "Connect" and also
    for the "Connection Address" entry (as it was before moving this dialog
    to a .ui file).
    
    The "Recent connections" widget is left behind as GtkRecentChooserWidget
    isn't suitable for mnemonic activation.
    
    Resolves: rhbz#1351487
    
    Signed-off-by: Fabiano FidĂȘncio <fidencio@redhat.com>
    Acked-by: Pavel Grunt <pgrunt@redhat.com>