Stay on the release page when jumping between release versions

Always using the /module endpoint caused release pages to jump to file
listings (after requesting /module/AUTHOR/Foo-Bar-1.23/ and being
redirected to /source/...).

Jumping between module versions was unaffected.
Merge pull request #1257 from CPAN-API/tsibley/jump-to-version-on-release-page

Stay on the release page when jumping between release versions