Bug 15133: encode correctly email generated by runreport.pl

Bug 15133: encode correctly email generated by runreport.pl

/misc/cronjobs/runreport.pl send badly encoded email in text/csv
(partially ok in HTML).

TEST:

1. Send by email a report containing a subject with accented characters
   and resultset with accented characters. For example:

   ./runreport.pl --subject="éèà" --to=me@home.org  1
   ./runreport.pl --format=html --subject="éèà" --to=me@home.org  1

   The first email contains badly encoded subject & message. The second email
   contains badly encoded subject, but correct message.

2. Apply the patch

3. Repeat 1 => No more strange characters.

Signed-off-by: Liz Rea <liz@catalyst.net.nz>
Characters are correctly encoded now, thanks for that good spot.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 9515db57bdd13cdff33d9056963455fb850ad877)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>