Fix bug where css is always injected
Fix bug where css is always injected

jiahaog/Nativefier,gfpacheco/Nativefier,gfpacheco/Nativefier,pixel9/nativefier,zucher/nativefier,zucher/nativefier,jiahaog/Nativefier,gfpacheco/Nativefier,faceair/nativefier-slack,skewedlines/Nativefier,skewedlines/Nativefier,skewedlines/Nativefier,pixel9/nativefier,pixel9/nativefier,jiahaog/Nativefier,zucher/nativefier,faceair/nativefier-slack