Calculating button position if sidebar collapsed/opened
Calculating button position if sidebar collapsed/opened

Fixes #880

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