Add "Any User Projects" to Maniphest Custom Query

Summary: Added a new way of filtering projects in Maniphest custom queries. This will filter on any project that a user is associated with.

Test Plan:
- Create some tasks.
- Create a project (auto join).
- Add the project to some of the tasks.
- Run custom query, see the correct task.
- Save custom query, check the same tasks are there.
- Add the project to another task, check task was added in the custom query list view.
- Remove the project from a task and check the task disappeared from the custom query list view.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5570