Rename "ProfilePanelConfiguration" to "ProfileMenuItemConfiguration"

Summary:
Ref T11957. This renames the Configuration storage, transaction, query, and PHID type.

No rename on the actual menu item types yet, that's next (and should be the end of this, I think).

Test Plan:

• Viewed projects.
• Viewed profiles.
• Edited a project menu.
• Grepped for all renamed symbols, I think?

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T11957

Differential Revision: https://secure.phabricator.com/D17027