On list description page, add link to HyperKitty archives of list

[Sumana Harihareswara]

On a Postorius list description page, e.g., https://lists-dev.cloud.fedoraproject.org/admin/lists/hyperkitty-test.lists-dev.cloud.fedoraproject.org/ , we should (if a HyperKitty archive of that list is available) link to it. If the archive is available only to list members, we should say that, and not link. If there are no archives available (either because there's no HyperKitty installation or because the list owners choose not to archive the list), we should explicitly say that there are no archives available.

[Sumana Harihareswara (sumanah)]

If archives are publicly available:

To see the collection of prior postings to the list, visit the <a href="">[NAME OF LIST] Archives</a>.

If they're only for list members:

<i>(The current archive is only available to the list members.)</i>

If there are no archives:

<i>(No archives are available.)</i>

[Sumana Harihareswara (sumanah)]

In the long run I would like for us to have the second and third messages available....