LP1765179 - fix issue with pending/staged user reg

LP1765179 - fix issue with pending/staged user reg

After completing a staged user registration, the controller
in regctl.js was refreshing to the same route, and
trying to fetch the same staged user, but never finding it
as it was no longer staged/pending. This addresses that bug
and adds a bChannel refresh to the pending grid, so once
the user is registered in the child tab, it closes the tab and
the pending user grid is updated.

Signed-off by: Cesar Velez <cesar.velez@equinoxinitiative.org>