This commit adds two columns named 'Guest users' and
'Non guest users' to respresent count of such users.
We query 'RemoteRealmAuditLog' to get the data.
Moves the "Remote Zulip servers" tab in the "/activity" page for
an installation to a separate page, "/activity/remote".
Prototype for moving other tabs in "/activity" to separate pages.
This adds a helper based on testing patterns of using the "queries_captured"
context manager with "assert_length" to check the number of queries
executed for preventing performance regression.
It explains the rationale of checking the query count through an
"AssertionError" and prints the queries captured as assert_length does,
but with a format optimized for displaying the queries in a more
readable manner.
Signed-off-by: Zixuan James Li <p359101898@gmail.com>
Using user IDs instead of emails is more reliable since users can
have arbitrarily complex emails that are hard to encode in a URL.
This has led to NoReverseMatch exceptions in the past.