Move and rename two project configuration links in index.txt
Move and rename two project configuration links in index.txt

Set parent of "Review Labels" to "Project Configuration" page instead of
"Access Controls" as it is connected to project configuration, not access
control.

The same done for "Project Configuration File Format" page, but here also
fixed the wrong page title ("Accessor Controls Configuration Format") used
on index.txt.

Change-Id: Icb93659f48218b0c88d1411732d7fb5f7e5a3c5a

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