LP#1361258 Patron reg repair user settings saving/loading

LP#1361258 Patron reg repair user settings saving/loading

Avoid caching user setting values at the service (app) level in the user
editor.  In other words, always fetch a fresh copy of the current user's
setting with each instance of the editor page.

This solves a number problems where stale versions of the cached data
were referenced and acted on, both when displaying an updating user
settings.

Additionally, ensure that clone user and stage user data is refreshed
on all page instances as the URL params that affect these values can
change per instance.

Other data that is common to all instances (e.g. the set of profile
groups) is still cached as before.

Signed-off-by: Bill Erickson <berickxx@gmail.com>