Blocking PMs blocks challenges too
Blocking PMs blocks challenges too

There's no way to block both PMs and challenges at the same time,
and anyone who blocks PMs usually doesn't want to be challenged,
either. This commit fixex both problems.

/away and /back have been modified to block PMs (i.e. both).

ShowdownHelper/Saffron,jumbowhales/Pokemon-Showdown,Sora-Server/Sora,Elveman/RPCShowdownServer,QuiteQuiet/Pokemon-Showdown,ZestOfLife/FestiveLife,SubZeroo99/Pokemon-Showdown,aakashrajput/Pokemon-Showdown,PS-Spectral/Spectral,PauLucario/LQP-Server-Showdown,MayukhKundu/Pokemon-Domain,Guernouille/Pokemon-Showdown,psnsVGC/Wish-Server,xfix/Pokemon-Showdown,forbiddennightmare/Pokemon-Showdown-1,SilverTactic/Showdown-Boilerplate,TheManwithskills/Server,Firestatics/Firestatics46,TheManwithskills/New-boiler-test,ScottehMax/Pokemon-Showdown,DarkSuicune/Kakuja-2.0,Tesarand/Pokemon-Showdown,KaitoV4X/Showdown,comedianchameleon/test,Firestatics/Omega-Alpha,MayukhKundu/Technogear,johtooo/PS,theodelhay/test,azum4roll/Pokemon-Showdown,Syurra/Pokemon-Showdown,TheDiabolicGift/Showdown-Boilerplate,Hidden-Mia/Roleplay-PS,Atwar/server-epilogueleague.rhcloud.com,arkanox/MistShowdown,MasterFloat/Pokemon-Showdown,TheManwithskills/DS,superman8900/Pokemon-Showdown,ShowdownHelper/Saffron,piiiikachuuu/Pokemon-Showdown,Sora-Server/Sora,ehk12/clone,Wando94/Pokemon-Showdown,MeliodasBH/Articuno-Land,panpawn/Pokemon-Showdown,MasterFloat/LQP-Server-Showdown,lAlejandro22/lolipoop,Neosweiss/Pokemon-Showdown,sama2/Lumen-Pokemon-Showdown,Flareninja/Pokemon-Showdown,arkanox/MistShowdown,sama2/Dropp-Pokemon-Showdown,ZestOfLife/PSserver,BuzzyOG/Pokemon-Showdown,JennyPRO/Jenny,AustinXII/Pokemon-Showdown,Irraquated/EOS-Master,LightningStormServer/Lightning-Storm,kotarou3/Krister-Pokemon-Showdown,TheManwithskills/Dusk--Showdown,Yggdrasil-League/Yggdrasil,Volcos/SpacialGaze,Legit99/Lightning-Storm-Server,asdfghjklohhnhn/Pokemon-Showdown,psnsVGC/Wish-Server,FakeSloth/Infinite,ZestOfLife/PSserver,Tesarand/Pokemon-Showdown,Ecuacion/Lumen-Pokemon-Showdown,sama2/Universe-Pokemon-Showdown,Sora-League/Sora,cadaeic/Pokemon-Showdown,Bryan-0/Pokemon-Showdown,Zarel/Pokemon-Showdown,PrimalGallade45/Lumen-Pokemon-Showdown,hayleysworld/harmonia,lFernanl/Mudkip-Server,SkyeTheFemaleSylveon/Mudkip-Server,EienSeiryuu/Pokemon-Showdown,Tesarand/Pokemon-Showdown,yashagl/pokemon-showdown,KewlStatics/Showdown-Template,BlazingAura/Showdown-Boilerplate,Kill-The-Noise/BlakJack-Boilerplate,DesoGit/TsunamiPS,jd4564/Pokemon-Showdown,Vacate/Pokemon-Showdown,yashagl/pokecommunity,Wando94/Spite,Flareninja/Showdown-Boilerplate,abulechu/Dropp-Pokemon-Showdown,Kokonoe-san/Glacia-PS,hayleysworld/Showdown-Boilerplate,gustavo515/final,KewlStatics/Shit,Lord-Haji/SpacialGaze,MayukhKundu/Pokemon-Domain,UniversalMan12/Universe-Server,scotchkorean27/Pokemon-Showdown,MasterFloat/Pokemon-Showdown,Wando94/Spite,JellalTheMage/Jellals-Server,EmmaKitty/Pokemon-Showdown,Alpha-Devs/Alpha-Server,gustavo515/test,Pablo000/aaa,ankailou/Pokemon-Showdown,ZeroParadox/BlastBurners,HoeenCoder/SpacialGaze,svivian/Pokemon-Showdown,k3naan/Pokemon-Showdown,Darkshadow6/PokeMoon-Creation,brettjbush/Pokemon-Showdown,Ecuacion/Lumen-Pokemon-Showdown,jumbowhales/Pokemon-Showdown,abrulochp/Lumen-Pokemon-Showdown,NoahVSGamingYT/Pokemon-Showdown,Breakfastqueen/advanced,kupochu/Pokemon-Showdown,PS-Spectral/Spectral,kuroscafe/Showdown-Boilerplate,Flareninja/Showdown-Boilerplate,RustServer/Pokemon-Showdown,SSJGVegito007/Vegito-s-Server,ehk12/coregit,Kill-The-Noise/BlakJack-Boilerplate,CharizardtheFireMage/Showdown-Boilerplate,TheFenderStory/Showdown-Boilerplate,k3naan/Pokemon-Showdown,xCrystal/Pokemon-Showdown,LustyAsh/EOS-Master,Lord-Haji/SpacialGaze,ankailou/Pokemon-Showdown,Pokemon-Devs/Pokemon-Showdown,DarkSuicune/Pokemon-Showdown,lAlejandro22/lolipoop,bai2/Dropp,hayleysworld/serenityc9,yashagl/pokemon,megaslowbro1/Pokemon-Showdown,SubZeroo99/Pokemon-Showdown,AWailOfATail/awoat,hayleysworld/serenityc9,megaslowbro1/Pokemon-Showdown,Sora-League/Sora,EienSeiryuu/Pokemon-Showdown,megaslowbro1/Showdown-Server-again,TheManwithskills/Server---Thermal,aakashrajput/Pokemon-Showdown,KewlStatics/Pokeindia-Codes,svivian/Pokemon-Showdown,lFernanl/Mudkip-Server,Lauc1an/Perulink-Showdown,CreaturePhil/Showdown-Boilerplate,yashagl/pokecommunity,JellalTheMage/PS-,JellalTheMage/PS-,abulechu/Lumen-Pokemon-Showdown,QuiteQuiet/Pokemon-Showdown,theodelhay/test,forbiddennightmare/Pokemon-Showdown-1,megaslowbro1/Pokemon-Showdown-Server-for-megaslowbro1,Pokemon-Devs/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,AWailOfATail/awoat,Hidden-Mia/Roleplay-PS,Zarel/Pokemon-Showdown,TheDiabolicGift/Showdown-Boilerplate,Wando94/Pokemon-Showdown,PrimalGallade45/Dropp-Pokemon-Showdown,Alpha-Devs/Alpha-Server,Mystifi/Exiled,SkyeTheFemaleSylveon/Mudkip-Server,TheManwithskills/Dusk--Showdown,TheManwithskills/COC,Sora-League/Sora,abrulochp/Lumen-Pokemon-Showdown,gustavo515/batata,Irraquated/EOS-Master,abulechu/Dropp-Pokemon-Showdown,scotchkorean27/Pokemon-Showdown,danpantry/Pokemon-Showdown,KewlStatics/Shit,TheManwithskills/Creature-phil-boiler,BuzzyOG/Pokemon-Showdown,TheManwithskills/Creature-phil-boiler,TheFenderStory/Pokemon-Showdown,DesoGit/TsunamiPS,lFernanl/Pokemon-Showdown,DesoGit/Tsunami_PS,bai2/Dropp,Irraquated/Pokemon-Showdown,AWailOfATail/Pokemon-Showdown,abrulochp/Dropp-Pokemon-Showdown,urkerab/Pokemon-Showdown,panpawn/Gold-Server,piiiikachuuu/Pokemon-Showdown,Enigami/Pokemon-Showdown,MeliodasBH/Articuno-Land,Celecitia/Plux-Pokemon-Showdown,MasterFloat/LQP-Server-Showdown,AustinXII/Pokemon-Showdown,Git-Worm/City-PS,KewlStatics/Alliance,MeliodasBH/boarhat,SolarisFox/Pokemon-Showdown,azum4roll/Pokemon-Showdown,Darkshadow6/git-remote-add-scalingo-git-scalingo.com-pokemoonforums,SolarisFox/Pokemon-Showdown,KaitoV4X/Showdown,Extradeath/advanced,Atwar/ServerClassroom,Pikachuun/Pokemon-Showdown-SMCMDM,Firestatics/omega,lFernanl/Zero-Pokemon-Showdown,comedianchameleon/test,RustServer/Pokemon-Showdown,yashagl/pokemon-showdown,TbirdClanWish/Pokemon-Showdown,megaslowbro1/Pokemon-Showdown-Server-for-megaslowbro1,xCrystal/Pokemon-Showdown,jumbowhales/Pokemon-Showdown,yashagl/pokemon,Alpha-Devs/OmegaRuby-Server,superman8900/Pokemon-Showdown,javi501/Lumen-Pokemon-Showdown,miahjennatills/Pokemon-Showdown,svivian/Pokemon-Showdown,Mystifi/Exiled,Zipzapadam/Server,lFernanl/Lumen-Pokemon-Showdown,Lauc1an/Perulink-Showdown,HoeenCoder/SpacialGaze,Firestatics/omega,xfix/Pokemon-Showdown,MayukhKundu/Mudkip-Server,Enigami/Pokemon-Showdown,urkerab/Pokemon-Showdown,PrimalGallade45/Dropp-Pokemon-Showdown,Breakfastqueen/advanced,Legit99/Lightning-Storm-Server,Darkshadow6/PokeMoon-Creation,QuiteQuiet/Pokemon-Showdown,TheFenderStory/Pokemon-Showdown,PS-Spectral/Spectral,MayukhKundu/Technogear-Final,kubetz/Pokemon-Showdown,lFernanl/Pokemon-Showdown,xCrystal/Pokemon-Showdown,CharizardtheFireMage/Showdown-Boilerplate,MayukhKundu/Mudkip-Server,Ridukuo/Test,Sora-Server/Sora,sama2/Universe-Pokemon-Showdown,Enigami/Pokemon-Showdown,KewlStatics/Pokeindia-Codes,Articuno-I/Pokemon-Showdown,Vacate/Pokemon-Showdown,Darkshadow6/git-remote-add-scalingo-git-scalingo.com-pokemoonforums,miahjennatills/Pokemon-Showdown,PauLucario/LQP-Server-Showdown,TbirdClanWish/Pokemon-Showdown,AbsolitoSweep/Absol-server,DalleTest/Pokemon-Showdown,AWailOfATail/Pokemon-Showdown,Volcos/SpacialGaze,TheManwithskills/Server---Thermal,CreaturePhil/Showdown-Boilerplate,Irraquated/Showdown-Boilerplate,JennyPRO/Jenny,Zipzapadam/Server,ehk12/clone,AnaRitaTorres/Pokemon-Showdown,jd4564/Pokemon-Showdown,gustavo515/final,Darkshadow6/PokeMoon-Creation,ZeroParadox/BlastBurners,KewlStatics/Alliance,comedianchameleon/test,Ransei1/Alt,aakashrajput/Pokemon-Showdown,InvalidDN/Pokemon-Showdown,kotarou3/Krister-Pokemon-Showdown,Pikachuun/Pokemon-Showdown,EmmaKitty/Pokemon-Showdown,zczd/enculer,xfix/Pokemon-Showdown,TheManwithskills/Server,Ecuacion/Pokemon-Showdown,Nineage/Origin,ShowdownHelper/Saffron,panpawn/Gold-Server,TheManwithskills/serenity,Extradeath/psserver,hayleysworld/serenity,Ransei1/Alt,anubhabsen/Pokemon-Showdown,kuroscafe/Showdown-Boilerplate,Celecitia/Plux-Pokemon-Showdown,InvalidDN/Pokemon-Showdown,Pikachuun/Pokemon-Showdown-SMCMDM,gustavo515/gashoro,TheManwithskills/COC,Neosweiss/Pokemon-Showdown,DalleTest/Pokemon-Showdown,kuroscafe/Paradox,sirDonovan/Pokemon-Showdown,hayleysworld/serenityserver,Articuno-I/Pokemon-Showdown,xfix/Pokemon-Showdown,DesoGit/Tsunami_PS,UniversalMan12/Universe-Server,Kokonoe-san/Glacia-PS,TheDiabolicGift/Lumen-Pokemon-Showdown,Ecuacion/Pokemon-Showdown,lFernanl/Zero-Pokemon-Showdown,Flareninja/Lumen-Pokemon-Showdown,AnaRitaTorres/Pokemon-Showdown,panpawn/Gold-Server,Irraquated/Showdown-Boilerplate,Alpha-Devs/OmegaRuby-Server,panpawn/Pokemon-Showdown,sama2/Dropp-Pokemon-Showdown,Ridukuo/Test,AustinXII/Pokemon-Showdown,SilverTactic/Dragotica-Pokemon-Showdown,LegendBorned/PS-Boilerplate,Syurra/Pokemon-Showdown,TheManwithskills/DS,Yggdrasil-League/Yggdrasil,FakeSloth/wulu,HoeenCoder/SpacialGaze,UniversalMan12/Universe-Server,urkerab/Pokemon-Showdown,MayukhKundu/Technogear,MeliodasBH/boarhat,svivian/Pokemon-Showdown,johtooo/PS,Breakfastqueen/advanced,kuroscafe/Paradox,LustyAsh/EOS-Master,AWailOfATail/Pokemon-Showdown,DarkSuicune/Kakuja-2.0,FakeSloth/Infinite,yashagl/yash-showdown,Extradeath/advanced,ehk12/bigbangtempclone,SkyeTheFemaleSylveon/Pokemon-Showdown,lFernanl/Lumen-Pokemon-Showdown,TheFenderStory/Showdown-Boilerplate,SSJGVegito007/Vegito-s-Server,Elveman/RPCShowdownServer,Pikachuun/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,Guernouille/Pokemon-Showdown,ZestOfLife/FestiveLife,javi501/Lumen-Pokemon-Showdown,SerperiorBae/Pokemon-Showdown-1,MayukhKundu/Flame-Savior,Irraquated/Pokemon-Showdown,Darkshadow6/git-remote-add-scalingo-git-scalingo.com-pokemoonforums,yashagl/yash-showdown,cadaeic/Pokemon-Showdown,JellalTheMage/Jellals-Server,kubetz/Pokemon-Showdown,Kevinxzllz/PS-Openshift-Server,abrulochp/Dropp-Pokemon-Showdown,hayleysworld/serenity,PrimalGallade45/Lumen-Pokemon-Showdown,KewlStatics/Showdown-Template,SkyeTheFemaleSylveon/Pokemon-Showdown,svivian/Pokemon-Showdown,MayukhKundu/Technogear-Final,TheDiabolicGift/Lumen-Pokemon-Showdown,DB898/theregalias,Atwar/server-epilogueleague.rhcloud.com,Mystifi/Exiled,asdfghjklohhnhn/Pokemon-Showdown,TogeSR/Lumen-Pokemon-Showdown,Irraquated/Pokemon-Showdown,ehk12/bigbangtempclone,DB898/theregalias,NoahVSGamingYT/Pokemon-Showdown,TogeSR/Lumen-Pokemon-Showdown,LightningStormServer/Lightning-Storm,hayleysworld/harmonia,ScottehMax/Pokemon-Showdown,Kill-The-Noise/BlakJack-Boilerplate,SerperiorBae/Pokemon-Showdown-1,Flareninja/Lumen-Pokemon-Showdown,Bryan-0/Pokemon-Showdown,TheManwithskills/serenity,AbsolitoSweep/Absol-server,LightningStormServer/Lightning-Storm,Lord-Haji/SpacialGaze,TheManwithskills/New-boiler-test,gustavo515/batata,Git-Worm/City-PS,SilverTactic/Showdown-Boilerplate,Nineage/Origin,xfix/Pokemon-Showdown,megaslowbro1/Showdown-Server-again,DarkSuicune/Pokemon-Showdown,danpantry/Pokemon-Showdown,CreaturePhil/Showdown-Boilerplate,ZeroParadox/ugh,hayleysworld/serenityserver,gustavo515/test,LegendBorned/PS-Boilerplate,Pablo000/aaa,Flareninja/Pokemon-Showdown,Zarel/Pokemon-Showdown,zczd/enculer,SilverTactic/Dragotica-Pokemon-Showdown,Firestatics/Omega-Alpha,ehk12/coregit,zek7rom/SpacialGaze,brettjbush/Pokemon-Showdown,Enigami/Pokemon-Showdown,HoeenCoder/SpacialGaze,ZeroParadox/ugh,zek7rom/SpacialGaze,anubhabsen/Pokemon-Showdown,hayleysworld/Showdown-Boilerplate,Kevinxzllz/PS-Openshift-Server,BuzzyOG/Pokemon-Showdown,DesoGit/Tsunami_PS,Firestatics/Firestatics46,Extradeath/psserver,sama2/Lumen-Pokemon-Showdown,BlazingAura/Showdown-Boilerplate,Atwar/ServerClassroom,SerperiorBae/Pokemon-Showdown-1,MayukhKundu/Flame-Savior,gustavo515/gashoro,abulechu/Lumen-Pokemon-Showdown,kupochu/Pokemon-Showdown