Homestyx hydra

R1:47bf382435ee

Allow profile menu items to be locked to the top or bottom of the menu

Summary:
Depends on D20353. Ref T13275. This is just some small quality-of-life fixes:

- When you add items to menus, they currently go below the "Edit Menu/Manage Menu" links by default. This isn't a very good place for them. Instead, lock "edit" items to the bottom of the menu.
- Lock profile pictures to the top of the menu. This just simplifies things a little.
- Show more iconography hints on the "edit menu items" UI.
Repository: R1 hydra
Commit Date: Apr 2 2019