urlEncode should use url.PathEscape not url.QueryEscape

[idc77]

the urlescape filter is using url.QueryEscape and not url.PathEscape.
You might have PHP roots where urlencode is used, but url.QueryEscape is not the proper replacement as is encodes QUERIES not PATHS.
An URL has paths and queries.

There should be pathEscape and queryEscape and for compatibility reasons urlescape should be using url.PathEscape, in the long run urlescape should be deprecated.

Why? Because if you use QueryEscape to encode a PATH you will receive wrong results