LP1816475: Booking module refresh

LP1816475: Booking module refresh

This commit ports several dojo interfaces to Angular(7).  As part of
this work,
* Adds moment.js-based timezone support to the Angular fmeditor and grid
* Adds a note field to booking.reservation. This field is visible in all
staff views of reservations (Create, Manage, Pull List, Capture, Pick Up
and Return), but is not visible to the patron
* Adds usrname as a selector for actor.usr
* Adds the new booking.reservation note field to the receipt in the
dojo-based Capture Reservations screen
* Adds a read-only display of au to the fm-editor
* Adds a new patron service in staff/share
* Adds relevant workstation settings to the database
* Adds form validation styles to reactive form fields
* Adds a necessary polyfill for testing

Signed-off-by: Jane Sandberg <sandbej@linnbenton.edu>