versions are not always quoted in URLs, causing invalid links

[Chad Miller]

Find a source-package page of a distro package that has an "epoch" colon in it, and discover that links to the version are invalid.

For example, https://launchpad.net/ubuntu/+source/libreoffice

Down in the list of distro-releases that contain it, see links to each. The links should be relative paths to the next page, but the colon in "1:4.0.2-0ubuntu5" is interpreted as a scheme separator, and "1" is not a valid scheme like "http".

lib/lp/registry/templates/distributionsourcepackage-index.pt

has

<a tal:attributes="href row/series_package/fmt:url"
             tal:content="row/distroseries/title"/>

The relative path should be 1%3A4.0.2-0ubuntu5 .