Update customavatar.js
Update customavatar.js

added popup so it can notify the target user when the avatar set's
KewlStatics/Shit,Flareninja/Showdown-Boilerplate,CreaturePhil/Showdown-Boilerplate,Kokonoe-san/Glacia-PS,Elveman/RPCShowdownServer,Kokonoe-san/Glacia-PS,CreaturePhil/Showdown-Boilerplate,KewlStatics/Showdown-Template,KewlStatics/Shit,Flareninja/Showdown-Boilerplate,CharizardtheFireMage/Showdown-Boilerplate,DesoGit/TsunamiPS,Elveman/RPCShowdownServer,CharizardtheFireMage/Showdown-Boilerplate,KewlStatics/Alliance,KewlStatics/Showdown-Template,CreaturePhil/Showdown-Boilerplate,KewlStatics/Alliance,DesoGit/TsunamiPS