Rename author 'John R. Campbell' to 'J. Campbell'

This author has a single participation in AR1 WGIII Ch5,
listed as 'J. Campbell'. It may or may not be Professor
John Campbell.
Rename author 'John Morton' to 'John F. Morton'

He participated in AR4 and AR5:
http://www.nri.org/nri-staff/mortonjohnf