50cdeb3b6e
that covers the whole card making it clickable, and @handle is a proper <a> with z-index: 10 sitting above the stretched link. Clicking the handle navigates to /u/{handle}/; clicking
anywhere else navigates to the activity.
ActivityDetail — @handle link added in the date/time row of the header, linking to /u/{handle}/. Only shown when activity.handle is set (i.e. multi-user mode).