Added some css classes for sidebar styling
Added some css classes for sidebar styling

WoltLab/WCF,0xLeon/WCF,Morik/WCF,PhrozenByte/WCF2,Morik/WCF,WoltLab/WCF,0xLeon/WCF,0xLeon/WCF,MeinAccount/WCF,Cyperghost/WCF,SoftCreatR/WCF,Morik/WCF,Cyperghost/WCF,ramiusGitHub/WCF,WoltLab/WCF,joshuaruesweg/WCF,cashcat/WCF-1,SoftCreatR/WCF,MenesesEvandro/WCF,SoftCreatR/WCF,Cyperghost/WCF,SoftCreatR/WCF,PhrozenByte/WCF2,ramiusGitHub/WCF,joshuaruesweg/WCF,Cyperghost/WCF,WoltLab/WCF,NBZ4live/WCF,MenesesEvandro/WCF,cashcat/WCF-1,Morik/WCF,joshuaruesweg/WCF,MeinAccount/WCF,NBZ4live/WCF,Cyperghost/WCF