Reduced the scope of the hideminor user preference to just recent

Reduced the scope of the hideminor user preference to just recent
changes (bug #845036). User contributions and related changes now
ignore this preference.

Also, fixed a problem where the show/hide minor edits link wasn't
appearing on recent changes and related changes. Made sure that the
param gets passed through with all the links.

Made sure that user contributions also had a show/hide minor edits
thing, and that minor edits are flagged with the M (or whatever) in
user contributions.