Summary: Various fixes of xcode projects and cleaning up some warnings Closes https://github.com/facebook/react-native/pull/13109 Differential Revision: D4762652 Pulled By: lacker fbshipit-source-id: b452976a58962439de4adecc8e703264af40cb38
Reviewed By: javache Differential Revision: D4434052 fbshipit-source-id: ff2743eb7fe5d9cabb860752ca3d92d631a2f02b