Maybe add a get_user_bulk() option to work similar to get_user() for places where we want lots of users at once

[Robert Lyon]

When we are returning a list of results, say a report with lots of users, when we call get_user() on each person it does a number of db calls to fetch associated activity and account information for that user and most of that info is not needed for the report.

What we should do is either have a get_user(true/false) which can return the minimum info or not or even have a get_user_bulk(userids) function where we can pass all the ids we want for 1 db query and then fetch info from resultant array