Add ATLAS_2JET_7TEV_R06 dataset

[cschwan]

No description provided.

[cschwan]

Here's the NLO QCD comparison with the PDF set NNLO31_nnlo_as_0118, and differences in percent (negative numbers mean the PineAPPL results are larger than the ones from the fastNLO tables):

 0.097705692  -0.029524504  -0.045472827  -0.004755233   0.029739655
-0.064540048   0.063101011  -0.051062044  -0.137454093  -0.285672414
 0.105163922   0.024731753  -0.664246734  -0.830783743  -0.363325642
-0.922222740  -0.524173062   0.108009266  -1.544566441  -1.079020162
-1.981874274   0.050535046   0.060590721  -0.117052047   0.098658267
-0.036488094  -0.140404613  -0.084909727  -0.025754750  -0.126969415
-0.058274305  -0.037504410  -0.448544196  -0.141516212  -0.289513082
-0.472360129  -0.749930194  -1.434339086  -0.069230344  -1.101111213
-1.356728007  -1.019926880   0.136372432  -0.174098017   0.132678737
-0.175555967  -0.091711421   0.329674980  -0.301245467  -0.135828117
-0.044421280  -0.151159147  -0.180714203  -0.269292816  -0.086714724
-1.679383528  -0.471492109   0.064165859  -2.709205773  -0.737210378
-1.367383261   0.712397128   0.015071043  -0.559304837  -0.898095857
-0.635608564   0.417496455  -0.595417908  -0.234943591   0.379013927
-2.300074172   0.143899121  -3.820987594  -0.651947971   2.635610610
-3.836244950   0.077185905  -2.857506232  -1.125685528  -0.942904692
 1.705983708   0.474818074   1.455639504  -2.314834701  -3.642414075
-4.984748962 -12.976480975  21.107223066   6.395977099 -10.653285934

The bigger differences lie in the more extreme parts of phase space (large invariant mass, large rapidity).