Fixing bugs, adding Higgs, cleaning up

Faster, lighter and better, feel free to test it for yourself!
The histograms in TTbar + X analyser are currently only commented out. I will remove them in a future patch should they really be not needed.

In total this patch
 - reduces the number of histograms for TTbar + X by 50%
 - reduces memory usage by 60% (BJetBinned 2D histograms -> no BJet binning, 9681889f822f4d50ed2e89417d71146ad59e68d4 )
 - improves processing speed by factor 3.4 (TTbar MC) due to the above