Convert projects to EditEngine

Summary: Ref T10010. This is pretty straightforward with a couple of very minor new behaviors, like the icon selector edit field.

Test Plan:

• Created projects.
• Edited projects.
• Saw "Create Project" in quick create menu.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10010

Differential Revision: https://secure.phabricator.com/D14896