Increase username max length
Increase username max length

Not sure why it was at 8!

Albert221/core,Luceos/core,kirkbushell/core,datitisev/core,Albert221/core,Luceos/core,renyuneyun/core,Luceos/core,malayladu/core,Albert221/core,datitisev/core,kirkbushell/core,datitisev/core,malayladu/core,flarum/core,kirkbushell/core,renyuneyun/core,renyuneyun/core,Luceos/core,malayladu/core,datitisev/core,flarum/core,malayladu/core,flarum/core,Albert221/core,kirkbushell/core,renyuneyun/core