project module wraps e-mails at 72 chars...

Issue Summary

When updating a bug report via e-mail, the project module sends that update to the mailing lists and applies its own word wrapping at (I think) 72 chars.

Because most people have their e-mail clients set to wrap at 74 or 76 chars, this causes issues with word-wrapping being messed up.

There are two possible fixes:
- Wrap things at 80 chars. Solves the issue, but if someone
replies to that e-mail on the devel list then it's their
problem to make the wrapping look sensible.
- Don't rewrap submissions done via e-mail. This is probably
the most sensible, but will be more work to change it.

I think I favour the first solution, as it's simple, easy and will work fine in the vast majority of cases.