Manage Users list issues

[iarovikov]

A) Changes don't update properly:

1. clicked on a user in the Manage Users list
2. changed their role from Admin to Standard User
3. clicked Save
4. returned to Manage Users list

Expected:
user should show as "Standard User"

actual:
user shows as "Admin" still
note that if you click on the user the details page shows Standard User

B) page load is very slow. I suspect it's loading the entire table instead of using pagination. Add pagination and make sure it's being added in a way that other tables can use.

C) needs to remember table settings like:
sort order
number of results per page
these should be cached in the session