DYTools.hh DYToolsUI.hh: added ESCALE_DIFF_xxxxx systematics
MyTools.* added function createMassProfileVec
TDielectron.hh: for DYee_8TeV_reg modified replace2UncorrEn. The second argument is correction 'scale' ( pt1=scale*(uncorr-corr)+corr )
YieldsAndBackgrounds/prepareYieldsR9.C added ESCALE_DIFF_xxxx systematics
YieldsAndBackgrounds/subtractBackgroundR9.C added ESCALE_DIFF_xxxx systematics. Also added plot for 1D