Increase max header length

[mprencipe]

This is a kludge to help with #2936. My knowledge of Urwid is slim but it really doesn't seem to offer any tools for this problem.

Using weight = 1 for the header key/value columns would use the available space more efficiently and get you wrapping for both key and value. The downside would be that the key and value would no longer be adjacent.

[mhils]

Thanks @mprencipe! If I understand things correctly, this PR would mean that we always allocate 50 characters for header keys if we have a key that long, and make values wrap in the rest of the space. Is that correct?

[mprencipe]

Yes, nothing special, as you described. Maybe the previous 30 character limit was a bit too little for modern monitors.

[mhils]

Hm. Assuming that header keys are generally smaller than header values, this would degrade the experience for everyone using a <100 col terminal window and we'll get a PR that reverts this in a couple of weeks. 😛 I'm not too much into urwid either, do we have any better approaches?

[mprencipe]

Closing this as it's clearly not a good solution.