Migrate old Maniphest custom queries to new query infrastructure

Summary: Ref T2625. EVERYONE LOVES MIGRATIONS!!!

Test Plan:

• Created and migrated a query with every field, verified results were preserved.
• Created and migrated a query using "noproject" and "upforgrabs" magic, verified results were preserved.

Here's the pre-migration "everything" query:

{F58110}

Here it is after migration:

{F58111}

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2625

Differential Revision: https://secure.phabricator.com/D6977