issue2550795: @dispname query args in page.html search links not valid html. Some queries with names that include spaces are not properly url encoded/quoted. I.E. a space should be replaced with %20. Fixes to allow a url_query method to be applied to HTMLStringProperty to properly quote string values passed as part of a url.

@rem python -m pip install sphinx
@rem python -m pip install sphinxcontrib-cheeseshop

python -m sphinx . html