api: allow parameters with urlencoded names
api: allow parameters with urlencoded names

Aptly allows create e.g. repos with a / to use those with the REST api
the router needs to allow urlencoded parameters in various places to
represent this. A specific example of this is the /api/repos/:name/packages path

Signed-off-by: Sjoerd Simons <1dafb4c4a7acdc6e1eca32ff35fda03e0e9cd976@collabora.com>

aptly-dev/aptly,aptly-dev/aptly,aptly-dev/aptly