Sync release-654-newdata branch with real content of pdfsets repo
Update pdfsets.dox and pdfsets.dox index with:
- CTEQ-TEA PDF sets (#55)
- MSHT20an3lo_as_smallrange
- ABMP16_5_nnlo_high_x (#56 (closed) )
- bug-fixed sets nCTEQ15* with a typo in info file (was OrderQcd instead of OrderQCD). Fixed, DataVersion incremented.
Edited by Dmitry Konstantinov