'was wondering if the filter change of Dolibarr 13 might have affected
something else and, well, yes...
So, following e1ac0a6d69, we also disable the
filter for the email addresses, else we get something like
"Webmaster <webmaster@bugness.org>" becoming "Webmaster".
The behaviour of GETPOST(..., 'alpha') changed with Dolibarr 13, copying
'alphanohtml'. Unfortunately, there is no retro-compatible option. Thus the
'none' filter seems the better call since there doesn't seem to have any big
attack involving emails' body (except HTML+JS...)
For the next big version, maybe use the 'restricthtml' filter, but it only
appeared in Dolibarr 12.
Technical reminder about the DB upgrade :
There doesn't seem to be an easy and reusable way to give CMail both
parts of an text+html email, so we rework the database schema to have
a simple 'body' field with a 'body_ishtml' switch, following CMail
interface.
Enhancement from issue #1
