[mailing list] add paging

Summary:
The mailing list page in MetaMTA only showed the first 100
sorted by ID, so it made it seem like lists were missing. Changed it to
do paging and short by name, so it has some user-understandable order.

Test Plan:

• Go to /mail/lists/
• Step through pager, confirm ordering.

Reviewers: nh, epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: https://secure.phabricator.com/D1670