Create Usage Quota tab and feature flag for Max User count activity
Background - #334689 (comment 619838538)
As part of &5872 we need a tab on the Usage Quota page for the user to hit and we want it protected by a feature flag until we're ready to release
Availability & Testing
Frontend specs should be written to accommodate for this new tab. If the Tab is a new Vue component, the component should have sufficient testing to ensure that the data necessary in the tab is present.
We may also consider feature tests to ensure that the tab appears when the feature flag is enabled, versus the appearance when not enabled.
Edited by Dan Davison