EditSchema: add mandatory check for "name" and "photo".

- The editor works fine without other fields.
- Also added test for missing supports* attributes for the name kind.
(for now, all the support* attributes must be true.  Otherwise the
editor may not work properly.)
- Also fixed the default value for the support* attributes, which was
mistakenly set to true.

Bug 5578679

Change-Id: Iec5412feb3aa671b64f74d850ccf67daaa87c88e