Add missing English language item for signature editing permission
Add missing English language item for signature editing permission

See #2612

SoftCreatR/WCF,SoftCreatR/WCF,Cyperghost/WCF,Cyperghost/WCF,MenesesEvandro/WCF,SoftCreatR/WCF,Cyperghost/WCF,WoltLab/WCF,MenesesEvandro/WCF,Cyperghost/WCF,Cyperghost/WCF,SoftCreatR/WCF,WoltLab/WCF,WoltLab/WCF,WoltLab/WCF