use splitter in parameter editor closes #1310
use splitter in parameter editor closes #1310

r13762

liuwenf/moose,mellis13/moose,dschwen/moose,jasondhales/moose,shanestafford/moose,kasra83/moose,jhbradley/moose,WilkAndy/moose,liuwenf/moose,apc-llc/moose,giopastor/moose,dschwen/moose,nuclear-wizard/moose,laagesen/moose,markr622/moose,harterj/moose,dschwen/moose,milljm/moose,permcody/moose,markr622/moose,katyhuff/moose,zzyfisherman/moose,yipenggao/moose,sapitts/moose,laagesen/moose,andrsd/moose,stimpsonsg/moose,laagesen/moose,liuwenf/moose,jiangwen84/moose,roystgnr/moose,stimpsonsg/moose,bwspenc/moose,jessecarterMOOSE/moose,waxmanr/moose,cpritam/moose,wgapl/moose,jessecarterMOOSE/moose,Chuban/moose,bwspenc/moose,friedmud/moose,SudiptaBiswas/moose,adamLange/moose,raghavaggarwal/moose,roystgnr/moose,danielru/moose,markr622/moose,lindsayad/moose,sapitts/moose,bwspenc/moose,zzyfisherman/moose,sapitts/moose,shanestafford/moose,waxmanr/moose,raghavaggarwal/moose,milljm/moose,WilkAndy/moose,stimpsonsg/moose,liuwenf/moose,shanestafford/moose,backmari/moose,milljm/moose,roystgnr/moose,idaholab/moose,xy515258/moose,giopastor/moose,SudiptaBiswas/moose,cpritam/moose,Chuban/moose,xy515258/moose,idaholab/moose,waxmanr/moose,zzyfisherman/moose,WilkAndy/moose,waxmanr/moose,SudiptaBiswas/moose,capitalaslash/moose,andrsd/moose,backmari/moose,markr622/moose,liuwenf/moose,tonkmr/moose,cpritam/moose,jessecarterMOOSE/moose,zzyfisherman/moose,cpritam/moose,sapitts/moose,jinmm1992/moose,backmari/moose,SudiptaBiswas/moose,capitalaslash/moose,bwspenc/moose,nuclear-wizard/moose,Chuban/moose,dschwen/moose,bwspenc/moose,xy515258/moose,idaholab/moose,andrsd/moose,tonkmr/moose,shanestafford/moose,jhbradley/moose,laagesen/moose,harterj/moose,jhbradley/moose,xy515258/moose,jbair34/moose,milljm/moose,roystgnr/moose,jinmm1992/moose,joshua-cogliati-inl/moose,capitalaslash/moose,lindsayad/moose,tonkmr/moose,jasondhales/moose,adamLange/moose,andrsd/moose,jessecarterMOOSE/moose,lindsayad/moose,WilkAndy/moose,jhbradley/moose,apc-llc/moose,roystgnr/moose,giopastor/moose,friedmud/moose,raghavaggarwal/moose,joshua-cogliati-inl/moose,kasra83/moose,YaqiWang/moose,jbair34/moose,stimpsonsg/moose,danielru/moose,yipenggao/moose,adamLange/moose,katyhuff/moose,wgapl/moose,SudiptaBiswas/moose,joshua-cogliati-inl/moose,jinmm1992/moose,yipenggao/moose,giopastor/moose,kasra83/moose,danielru/moose,jiangwen84/moose,roystgnr/moose,adamLange/moose,friedmud/moose,nuclear-wizard/moose,sapitts/moose,WilkAndy/moose,shanestafford/moose,kasra83/moose,katyhuff/moose,apc-llc/moose,danielru/moose,friedmud/moose,cpritam/moose,jinmm1992/moose,Chuban/moose,mellis13/moose,permcody/moose,harterj/moose,permcody/moose,harterj/moose,tonkmr/moose,permcody/moose,laagesen/moose,harterj/moose,YaqiWang/moose,shanestafford/moose,jiangwen84/moose,jbair34/moose,idaholab/moose,WilkAndy/moose,roystgnr/moose,zzyfisherman/moose,andrsd/moose,tonkmr/moose,katyhuff/moose,jiangwen84/moose,jessecarterMOOSE/moose,lindsayad/moose,idaholab/moose,liuwenf/moose,jasondhales/moose,wgapl/moose,jasondhales/moose,yipenggao/moose,capitalaslash/moose,lindsayad/moose,dschwen/moose,YaqiWang/moose,apc-llc/moose,cpritam/moose,YaqiWang/moose,backmari/moose,raghavaggarwal/moose,zzyfisherman/moose,nuclear-wizard/moose,mellis13/moose,joshua-cogliati-inl/moose,wgapl/moose,milljm/moose,tonkmr/moose,jbair34/moose,mellis13/moose