Since these are just interpreted comments, there's 0 impact on actual code.
This removes all lines that match /* vim: set(.*)tw=80: */ with S&R -- there are
a few others scattered around which will be removed manually in a second part.
Saving JSON from the viewer was broken, because the message passed to
the `saveToFile` function contained unneeded data. This bug was
introduced by 23e68227a2.