* supply default suggestion status change email
templates.
* remove the deprecated mail_suggestion_*.tmpl files
There are a couple suggestion statuses referred to
in the code and suggestion management page that currently
do not have notice templates defined: ASK and CHECKED. These
seem to be internal, so perhaps default message templates
are not needed for these.
Signed-off-by: Galen Charlton <gmcharlt@gmail.com>