lp1839341 Port Org Setting Editor UI

lp1839341 Port Org Setting Editor UI

- Speedy Retrieval for display all Org Unit Settings (~6 seconds
instead of DOJO's 20)
- Implement org_unit.settings.history.retrieve API Call utilizing
CSTORE operations
- View and revert OU settings to specific changes
- Update Org Unit Setting context orgs and values
- Filtering of Org Unit Settings by string found in name, description,
label, and/or group fields of Org Unit settings
- Get history in properly descending order based on date_applied
field
- Strip surrounding quotes from new values in history log
- Add columns for Edit and History actions.
- Add sql changes to support workstation setting for org unit settings grid
- Port Import/Export Dialog for batch-modifying settings using a JSON string.

Signed-off-by: Kyle Huckins <khuckins@catalyte.io>
 Changes to be committed:
	modified:   Open-ILS/src/eg2/src/app/staff/admin/local/admin-local-splash.component.html
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/org-unit-settings/edit-org-unit-setting-dialog.component.html
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/org-unit-settings/edit-org-unit-setting-dialog.component.ts
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/org-unit-settings/org-unit-setting-history-dialog.component.html
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/org-unit-settings/org-unit-setting-history-dialog.component.ts
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/org-unit-settings/org-unit-setting-json-dialog.component.html
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/org-unit-settings/org-unit-setting-json-dialog.component.ts
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/org-unit-settings/org-unit-settings-routing.module.ts
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/org-unit-settings/org-unit-settings.component.html
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/org-unit-settings/org-unit-settings.component.ts
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/org-unit-settings/org-unit-settings.module.ts
	modified:   Open-ILS/src/eg2/src/app/staff/admin/local/routing.module.ts
	modified:   Open-ILS/src/perlmods/lib/OpenILS/Application/Actor.pm
	modified:   Open-ILS/src/perlmods/lib/OpenILS/Application/AppUtils.pm
	modified:   Open-ILS/src/sql/Pg/950.data.seed-values.sql
	new file:   Open-ILS/src/sql/Pg/upgrade/XXXX.data.ouSettings-grid-ws-settings.sql