Enable announce command in PMs (#2860)
Enable announce command in PMs (#2860)

Before the semi-recent PM refactor, `/announce` /would/ work in private messages, this re-enables that functionality.
cadaeic/Pokemon-Showdown,KewlStatics/Shit,Lord-Haji/SpacialGaze,Sora-League/Sora,PS-Spectral/Spectral,SolarisFox/Pokemon-Showdown,Kokonoe-san/Glacia-PS,HoeenCoder/SpacialGaze,panpawn/Pokemon-Showdown,PS-Spectral/Spectral,xfix/Pokemon-Showdown,EienSeiryuu/Pokemon-Showdown,Lord-Haji/SpacialGaze,HoeenCoder/SpacialGaze,sirDonovan/Pokemon-Showdown,svivian/Pokemon-Showdown,cadaeic/Pokemon-Showdown,xfix/Pokemon-Showdown,AWailOfATail/Pokemon-Showdown,AustinXII/Pokemon-Showdown,AustinXII/Pokemon-Showdown,TbirdClanWish/Pokemon-Showdown,Mystifi/Exiled,Mystifi/Exiled,QuiteQuiet/Pokemon-Showdown,Volcos/SpacialGaze,sirDonovan/Pokemon-Showdown,azum4roll/Pokemon-Showdown,DarkSuicune/Pokemon-Showdown,xCrystal/Pokemon-Showdown,Zarel/Pokemon-Showdown,xfix/Pokemon-Showdown,HoeenCoder/SpacialGaze,danpantry/Pokemon-Showdown,svivian/Pokemon-Showdown,DesoGit/Tsunami_PS,AustinXII/Pokemon-Showdown,Sora-League/Sora,EienSeiryuu/Pokemon-Showdown,jumbowhales/Pokemon-Showdown,KewlStatics/Shit,jd4564/Pokemon-Showdown,Enigami/Pokemon-Showdown,urkerab/Pokemon-Showdown,xCrystal/Pokemon-Showdown,aakashrajput/Pokemon-Showdown,Enigami/Pokemon-Showdown,QuiteQuiet/Pokemon-Showdown,CreaturePhil/Showdown-Boilerplate,jd4564/Pokemon-Showdown,ShowdownHelper/Saffron,Volcos/SpacialGaze,DesoGit/Tsunami_PS,CreaturePhil/Showdown-Boilerplate,CreaturePhil/Showdown-Boilerplate,zek7rom/SpacialGaze,DarkSuicune/Pokemon-Showdown,jumbowhales/Pokemon-Showdown,PS-Spectral/Spectral,panpawn/Gold-Server,Mystifi/Exiled,KewlStatics/Alliance,ShowdownHelper/Saffron,QuiteQuiet/Pokemon-Showdown,Bryan-0/Pokemon-Showdown,AnaRitaTorres/Pokemon-Showdown,xfix/Pokemon-Showdown,AnaRitaTorres/Pokemon-Showdown,Kokonoe-san/Glacia-PS,HoeenCoder/SpacialGaze,KewlStatics/Alliance,Guernouille/Pokemon-Showdown,svivian/Pokemon-Showdown,Zarel/Pokemon-Showdown,Pikachuun/Pokemon-Showdown,azum4roll/Pokemon-Showdown,Guernouille/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,Bryan-0/Pokemon-Showdown,DesoGit/Tsunami_PS,AWailOfATail/Pokemon-Showdown,zek7rom/SpacialGaze,panpawn/Gold-Server,svivian/Pokemon-Showdown,SolarisFox/Pokemon-Showdown,panpawn/Gold-Server,panpawn/Pokemon-Showdown,aakashrajput/Pokemon-Showdown,Git-Worm/City-PS,Zarel/Pokemon-Showdown,Sora-League/Sora,TbirdClanWish/Pokemon-Showdown,AWailOfATail/Pokemon-Showdown,Enigami/Pokemon-Showdown,aakashrajput/Pokemon-Showdown,xCrystal/Pokemon-Showdown,Pikachuun/Pokemon-Showdown,Lord-Haji/SpacialGaze,svivian/Pokemon-Showdown,jumbowhales/Pokemon-Showdown,Git-Worm/City-PS,danpantry/Pokemon-Showdown,urkerab/Pokemon-Showdown,ShowdownHelper/Saffron,xfix/Pokemon-Showdown,urkerab/Pokemon-Showdown,Enigami/Pokemon-Showdown