support query string and anchor on external static urls
support encoding arbitrary query strings
tests for custom query strings
fix mishandled anchors that need to be quoted
handle static urls generated with a query string
fix tests
remove need for parsing static url twice to replace scheme
centralize and properly escape query string and anchor arguments
modify quoting to be bare-bones
update docs
Merge branch 'master' of github.com:Pylons/pyramid
coverage
Merge branch 'feature.custom-query-strings'
change the behavior of parse_url_overrides and resource_url to not quote a _query/query argument supplied as a string and document in changelog