Fix window sizing for Mac app
Fix window sizing for Mac app

wakermahmud/cryptocat,Raynes/cryptocat,PeterDaveHello/cryptocat,Cryptodog/cryptocat,Cryptodog/cryptocat,PeterDaveHello/cryptocat,DoNotUseThisCodeJUSTFORKS/cryptocat,wakermahmud/cryptocat,DGO143/cryptocat,DGO143/cryptocat,DoNotUseThisCodeJUSTFORKS/cryptocat,DGO143/cryptocat,Raynes/cryptocat,arno01/cryptocat,Raynes/cryptocat,DoNotUseThisCodeJUSTFORKS/cryptocat,arno01/cryptocat