Fix fatal on project list

Summary:
Until T605 gets fixed, you might end up with a Project without a Profile if the
Profile insert failed. This fatals the list view; instead, don't fatal if a
profile is missing.

(At some point we should probably just merge this field into the Project object,
I was just mimicking the user/profile separation but we have partial-field
object support now and Projects aren't super heavily used or very big.)

Test Plan:

• Viewed list view including a project with a missing profile.
• Edited the project, creating its profile.

Reviewers: btrahan, jungejason

Reviewed By: btrahan

CC: arice, aran, btrahan

Differential Revision: https://secure.phabricator.com/D1368