Diff view should be as wide as the project guidelines allow

[setanta]

It would be nice for the code diff views did not break lines that we normally se unbroken on our editors.
Perhaps it could get hints from the lint config files, or have a setup field for the project, or just be as wide as needed by the file being shown.

[hugopl]

I think just having a minimal size and use as max. size the viewport width is enough.