Angular should cache workstation/user setting values

[Bill Erickson]

Evergreen 3.7

This is a continuation of bug #1848550.

The Angular client makes much heavier use of the "cascade" settings API for fetching workstation and user setting values. Additionally, since the API also returns org unit setting values, it is often used in lieu of the traditional org unit setting retrieval methods (e.g. this.org.settings(...)). To reduce the API calls for these lookups, their values should be cached in IndexedDB, similar to how direct org unit setting lookup values are cached.

Branch en route.

[Bill Erickson (berick)]

A branch:

https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/berick/lp1938729-cache-user-ws-settings

[Bill Erickson (berick)]

As with the other cache bugs, testing comes down to fetching some workstation settings (on Angular pages -- e.g. grid settings) and verifying they are not re-fetched on page reload.

[Jason Boyer (jboyer)]

Hi Bill, this looks good to me, signoff is here: https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/jboyer/lp1938729_settings_cache_signoff / working/user/jboyer/lp1938729_settings_cache_signoff

[Bill Erickson (berick)]

Thanks, Jason! This should help with some of the too-many-api-calls issues. Merged to 3.6 and up.