Default action "Edit list" is no longer available from mailing list context menu in the contacts list (regression). Should be restored for ux-consistency, ux-efficiency, ux-discovery, and easy accessibility.

As mentioned in Bug 1774096 Comment 0, it's not clear why we maintain two different context menus for a mailing list, so here's two more menu items to be added:

• Mailing list context menu should be (essentially) the same between directory list and contacts list
• For consistency, add Export... and Print... action to the context menu of a mailing list in contacts list
• Default startup directory is ok only on the directory pane mailing list context (because that's where it applies)

Fwiw, the workaround of going through the directory tree to view or edit mailing lists won't cure the problem in the contacts list, won't work for All Address Books, and defeats the convenience and efficiency of being able to search for a mailing list and act on it directly from the list of found items.

Make the Mailing list context menu in the cards list consistent with the context menu in the books list.

try run: https://treeherder.mozilla.org/jobs?repo=try-comm-central&revision=03ea2ebf0c536832eda5c6f1548d0fa1d0c7bfe9

Pushed by geoff@darktrojan.net:
https://hg.mozilla.org/comm-central/rev/70fa6df25a6c
Show consistent context menu when a mailing list is selected in the cards list. r=darktrojan