Update gutter container only once per frame unless its width changes
Update gutter container only once per frame unless its width changes

Signed-off-by: Nathan Sobo <2e8aa918660411855c6d44d5bb2da677aa033255@github.com>

atom/atom,kevinrenaers/atom,CraZySacX/atom,andrewleverette/atom,andrewleverette/atom,stinsonga/atom,AlexxNica/atom,Arcanemagus/atom,stinsonga/atom,liuderchi/atom,atom/atom,PKRoma/atom,t9md/atom,Mokolea/atom,stinsonga/atom,AlexxNica/atom,stinsonga/atom,atom/atom,ardeshirj/atom,FIT-CSE2410-A-Bombs/atom,kevinrenaers/atom,brettle/atom,andrewleverette/atom,decaffeinate-examples/atom,t9md/atom,decaffeinate-examples/atom,decaffeinate-examples/atom,Arcanemagus/atom,ardeshirj/atom,decaffeinate-examples/atom,PKRoma/atom,CraZySacX/atom,ardeshirj/atom,liuderchi/atom,FIT-CSE2410-A-Bombs/atom,t9md/atom,liuderchi/atom,FIT-CSE2410-A-Bombs/atom,sotayamashita/atom,brettle/atom,sotayamashita/atom,Mokolea/atom,sotayamashita/atom,brettle/atom,CraZySacX/atom,liuderchi/atom,kevinrenaers/atom,PKRoma/atom,AlexxNica/atom,Arcanemagus/atom,Mokolea/atom