URLs can't contain utf-8 characters

* URI::Parser:: unescape is monkey patched in active support to force the encoding to utf-8 if it isn't by default. Lets set unescape to use ASCII-8BIT

Possible fix for https://github.com/rails/rails/issues/16104
This is force encoding it to ASCII - we want to force encode it to UTF-8 like the monkey patch in Active Support