Revert "Resolve relative links only in namespaces with subpages enabled."

This reverts commit bf8a79dd8d869bd65ed3674612330f4bd908d55c

Change-Id: Ife3579cb3a95bdd534cd3ca9ea359cef004dfa2c
Merge "Revert "Resolve relative links only in namespaces with subpages enabled.""