Merge pull request #145 from chayanit/master

NMSSM h(125)->a1a1->4tau at 13TeV
initial migration mgamc 2.2.1 and lhapdf6 plus additional (WIP) example cards
additional changes for mgamc 2.2.1 and lhapdf6 migration
remove unneeded cards and rename to reflect contents more clearly
make card names and models consistent
last card name fix
add additional example cards for 4flavour scheme with matching
remove superseded scripts
update cmssw default releases (only ones that have or will have the proper lhapdf6 external)
Merge pull request #147 from bendavid/mgamc2_2_1_lhapdf6

Migration to mg_amc 2.2.1 and lhapdf6 (and remove old scripts)
update default precision in NLO run cards
Merge pull request #148 from bendavid/mgamc2_2_1_lhapdf6

update default precision in NLO run cards
add new config file as example for LO MLM matching with latest configuration and new matching machinery
Merge pull request #150 from bendavid/MLMconfigexample

add new config file as example for LO MLM matching with latest configura...
Fragments for Exotica RSGravToGG PHYS14 request.
Delete RSGravitonToGammaGamma_kMpl01_M_5000_Tune4C_13TeV_pythia8_cfi.py

Not needed.
Fragments for Phys14 by Francesco
Francesco's cards for 14 TeV, empty source line removed
Merge pull request #152 from dnash86/master

Fixed configs from requester
add fix for python race condition in LO gridpack execution