R1:47da632a22ea

Separate saved queries in applications into "personal" and "global" queries

Summary:
Ref T12956. UI changes:

- Administrators get a new `[X] Save as global query` option when saving a query.
- "Edit Queries..." is split into "Personal" and "Global" sections. For administrators, each section can be edited. For non-admins, only the top section can be edited, but any query can be pinned.

A couple notes:

- This doesn't support "pin for everyone by default". New users just get the first query from the…