pager specifc "show incoming mailboxes list" macro

Exiting the pager before change-folder avoids 'Not available in this
menu' error when selecting a different entry in some circumstances.
4 jobs for master in 20 minutes and 26 seconds
Status Job ID Name Coverage
  Build
passed #60412408
gnutls

00:13:10

passed #60412407
openssl

00:19:06

 
  Deploy
passed #60412409
pages

00:01:20

passed pages:deploy

00:00:01