* Italicise primes and brackets in state res desc
I don't like it but it seems to make things look decent in Firefox.
This is probably good enough---we're not Knuth, after all.
Additionally I have avoided the use of `*E*'s` as in "E's prev_events"
since the apostrophe looks poor here.
Resolves#774.
An alternative to #1040.
* Changelog