Adds setSquidMaxage( 10 ) to Special:EntitiesWithoutLabel

This makes it possible for the squids to cache this page, as long
as it has the same signature, to avoid unnecessary serverload.
The argument is hardcoded, but it is probably a good guess for
pages like this.

Change-Id: Ib0246a45d31bd2d7b4b9db453241dd6bbfd19ebf
Merge "Adds setSquidMaxage( 10 ) to Special:EntitiesWithoutLabel"