This allows user to view all group private conversation messages
with a specific user. That is, it views all the the group private
messages from groups which include the given user.
Add search suggestion for group-pm-with. Add operator name
and description in "Search operators" tab.
Add change in tab name to "Group Messages" when using this operator.
Add frontend_tests for group-pm-with search operator.
Fixes: #3882.
While humans can disambiguate 'upper right' and 'top right' to one area,
it might help with any machine reading comprehension task by choosing a
more regular wording.
Tim Abbott
Abhijeet Kaur
rht
Cory Lynch
Cynthia Lin
Rishi Gupta