Bug 11603: Gather print notices - add a ods parameter

Bug 11603: Gather print notices - add a ods parameter

This patch adds:
- the ability to generate an ods file

From now you are able to generate a ods file for print notices.

You would like to generate a csv file and not a html file.

Test plan:
- same as previous patch but test the following parameters:
 perl misc/cronjobs/gather_print_notices.pl /tmp/test --ods
 --letter_code=OVERDUE -d=:
you should get an error because csv2ods is not installed.
Follow the installation instructions and try again the command.

A ods file should be generated in your /tmp/test directory.

Signed-off-by: Frederic Demians <f.demians@tamil.fr>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>