lp1857911 Statistical Categories UI port

lp1857911 Statistical Categories UI port
This UI allows editing copy statistical categories (stat cats), patron
statistical categories, and their entries. They are filtered by location.
This port opens a new page when editing deleting or adding entries.

2/21/2020 update - New entries now have a default stat cat and
org setting that cannot be edited.

Signed-off-by: Mike Risher <mrisher@catalyte.io>
 Changes to be committed:
	modified:   Open-ILS/examples/fm_IDL.xml
	modified:   Open-ILS/src/eg2/src/app/staff/admin/local/admin-local-splash.component.html
	modified:   Open-ILS/src/eg2/src/app/staff/admin/local/routing.module.ts
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/stat_cat/stat_cat.component.html
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/stat_cat/stat_cat.component.ts
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/stat_cat/stat_cat.module.ts
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/stat_cat/stat_cat_entries.component.html
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/stat_cat/stat_cat_entries.component.ts
	new file:   Open-ILS/src/eg2/src/app/staff/admin/local/stat_cat/stat_cat_routing.module.ts