Revert r37872 for now -- "(bug 2971) Standardize format of links to hist/diff in...

Revert r37872 for now -- "(bug 2971) Standardize format of links to hist/diff in Special:Contributions."

This appears to have changed "(hist) (diff)" to "(diff; hist)". I'm a bit leery of callign that "standardization" as it changes it from looking like regular Recent Chagnes to looking like enhanced Recent Changes.
Might be good to do a look around at other things, which use for example commas or pipes in parens as well, and figure out which is best to stick with.