Traceback should be uncollapsed by default

I'm reporting this in the role of a developer getting issue reports for non-Ubuntu projects. Apport could work great for this purpose, too, since it detects our system service's crashes.

For us, the most valuable information is typically in the Traceback field (it's a Python application).

However, when users are reporting back about problems, they tend to overlook that information.

The attached screenshot came from an issue reported by a user. If we had been able to peek at the Traceback information, we might have immediately known the cause.

To the user, this screenshot may seem to contain lots of information, but it doesn't contain anything specific, except for the version.

I realize that there is a lot of UI stuff that could be tweaked, and that the old design specs haven't been fully implemented. But hoping this issue is so minor to fix that it might pass :)

Thanks!