Improve script for git history
Improve script for git history

(closes #10226)

sapitts/moose,sapitts/moose,permcody/moose,bwspenc/moose,nuclear-wizard/moose,idaholab/moose,harterj/moose,sapitts/moose,dschwen/moose,milljm/moose,andrsd/moose,jessecarterMOOSE/moose,jessecarterMOOSE/moose,jessecarterMOOSE/moose,lindsayad/moose,SudiptaBiswas/moose,permcody/moose,dschwen/moose,laagesen/moose,milljm/moose,harterj/moose,idaholab/moose,milljm/moose,permcody/moose,andrsd/moose,nuclear-wizard/moose,YaqiWang/moose,YaqiWang/moose,lindsayad/moose,friedmud/moose,milljm/moose,friedmud/moose,andrsd/moose,laagesen/moose,dschwen/moose,lindsayad/moose,harterj/moose,YaqiWang/moose,milljm/moose,friedmud/moose,harterj/moose,jessecarterMOOSE/moose,SudiptaBiswas/moose,bwspenc/moose,idaholab/moose,sapitts/moose,dschwen/moose,bwspenc/moose,andrsd/moose,lindsayad/moose,idaholab/moose,bwspenc/moose,friedmud/moose,dschwen/moose,SudiptaBiswas/moose,sapitts/moose,laagesen/moose,nuclear-wizard/moose,andrsd/moose,lindsayad/moose,laagesen/moose,SudiptaBiswas/moose,nuclear-wizard/moose,harterj/moose,permcody/moose,SudiptaBiswas/moose,laagesen/moose,jessecarterMOOSE/moose,YaqiWang/moose,idaholab/moose,bwspenc/moose