hgweb: request: strip() form values
Entering "<correct_cset_hash> " in the search form was not returning anything.
This happens relatively often, due to HTML formatting: when copy/pasting a cset
hash from the web, selection might contain surrounding spaces.
templatekw: fix extras, manifest and showlist args (
issue1989)
Removing the explicit parameters from keywords signature is easier than copying
and reproducing the original argument list.