Expose project permissionOnly status via JSON-RPC

This is required by the Mylyn Gerrit connector to filter out
projects with Git repositories that only define refs/meta/config (i.e.
repository contains only configuration data and no real content).

Change-Id: I42f4cfb5e8c1a52be0e15741912e05199628b61c
Signed-off-by: Sascha Scholz <sascha.scholz@gmail.com>
6 files changed