change /modlog: support roomlog links for public room auth (#2831)
change /modlog: support roomlog links for public room auth (#2831)

By default, only global auth see links to the logs in the modlog.
If Config.roomauthModlogLink is set, this is extended to public room
auth

escape \u2190

This character seems to break when committing with git on windows
ShowdownHelper/Saffron,svivian/Pokemon-Showdown,Lord-Haji/SpacialGaze,PS-Spectral/Spectral,Lord-Haji/SpacialGaze,danpantry/Pokemon-Showdown,DesoGit/Tsunami_PS,Enigami/Pokemon-Showdown,Volcos/SpacialGaze,cadaeic/Pokemon-Showdown,xCrystal/Pokemon-Showdown,Enigami/Pokemon-Showdown,Sora-League/Sora,xCrystal/Pokemon-Showdown,svivian/Pokemon-Showdown,DesoGit/Tsunami_PS,Guernouille/Pokemon-Showdown,Enigami/Pokemon-Showdown,zek7rom/SpacialGaze,jumbowhales/Pokemon-Showdown,DesoGit/Tsunami_PS,SolarisFox/Pokemon-Showdown,Zarel/Pokemon-Showdown,KewlStatics/Shit,jumbowhales/Pokemon-Showdown,Bryan-0/Pokemon-Showdown,AnaRitaTorres/Pokemon-Showdown,cadaeic/Pokemon-Showdown,panpawn/Gold-Server,HoeenCoder/SpacialGaze,xfix/Pokemon-Showdown,Pikachuun/Pokemon-Showdown,KewlStatics/Alliance,EienSeiryuu/Pokemon-Showdown,Sora-League/Sora,xfix/Pokemon-Showdown,panpawn/Gold-Server,Sora-League/Sora,Kokonoe-san/Glacia-PS,KewlStatics/Shit,Volcos/SpacialGaze,PS-Spectral/Spectral,CreaturePhil/Showdown-Boilerplate,urkerab/Pokemon-Showdown,urkerab/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,KewlStatics/Alliance,Elveman/RPCShowdownServer,HoeenCoder/SpacialGaze,panpawn/Pokemon-Showdown,aakashrajput/Pokemon-Showdown,Kokonoe-san/Glacia-PS,Guernouille/Pokemon-Showdown,Pikachuun/Pokemon-Showdown,HoeenCoder/SpacialGaze,QuiteQuiet/Pokemon-Showdown,SolarisFox/Pokemon-Showdown,AustinXII/Pokemon-Showdown,HoeenCoder/SpacialGaze,svivian/Pokemon-Showdown,azum4roll/Pokemon-Showdown,aakashrajput/Pokemon-Showdown,svivian/Pokemon-Showdown,AustinXII/Pokemon-Showdown,azum4roll/Pokemon-Showdown,svivian/Pokemon-Showdown,jd4564/Pokemon-Showdown,xfix/Pokemon-Showdown,ShowdownHelper/Saffron,CreaturePhil/Showdown-Boilerplate,Mystifi/Exiled,Git-Worm/City-PS,Enigami/Pokemon-Showdown,urkerab/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,xCrystal/Pokemon-Showdown,PS-Spectral/Spectral,DarkSuicune/Pokemon-Showdown,DarkSuicune/Pokemon-Showdown,TbirdClanWish/Pokemon-Showdown,zek7rom/SpacialGaze,Mystifi/Exiled,AWailOfATail/Pokemon-Showdown,QuiteQuiet/Pokemon-Showdown,panpawn/Pokemon-Showdown,AustinXII/Pokemon-Showdown,Zarel/Pokemon-Showdown,AWailOfATail/Pokemon-Showdown,QuiteQuiet/Pokemon-Showdown,jd4564/Pokemon-Showdown,xfix/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,Lord-Haji/SpacialGaze,AWailOfATail/Pokemon-Showdown,xfix/Pokemon-Showdown,aakashrajput/Pokemon-Showdown,Mystifi/Exiled,EienSeiryuu/Pokemon-Showdown,Bryan-0/Pokemon-Showdown,TbirdClanWish/Pokemon-Showdown,Zarel/Pokemon-Showdown,CreaturePhil/Showdown-Boilerplate,Git-Worm/City-PS,danpantry/Pokemon-Showdown,jumbowhales/Pokemon-Showdown,AnaRitaTorres/Pokemon-Showdown,ShowdownHelper/Saffron,panpawn/Gold-Server,Elveman/RPCShowdownServer