Dev. tooltips clean up.
Implement complete mailto for CONSTAT message. 
Warning: 
  &amp;subject= 
has been changed to 
  ?subject= 
while tested on Linux/Firefox/Google Chrome/Thunderbird. To be confirmed
working in Windows/Outlook context (brittle).

Noticed "Motif" mapped to C[@POS='4'] => message.C[3] instead of
formerly configured message.C[0].