default version not used for submitting issues

on the project edit form, there's a field called "default version" that's in the "issue information" fieldset. the description reads "Default version for downloading and for submitting issues." however, it's not used when submitting issues at all... the version field defaults to none, presumably to force submitters to think about it and set an appropriate value. it appears that the default version is really *only* used to specify which tarball to include a direct link to on the project page.

either:

a) we should fix the description, and move the "default version" to some other part of the project edit form

or

b) we should make it so this really is used as a default when submitting issues, too.

seems like there's a decent reason not to do (b), though obviously at some point someone thought that was a good idea. ;) preferences? either one should be a relatively tiny diff.