Fix layout for different font sizes on Android

[spieglt]

Someone emailed me noting that the layout is wrong when using a larger font size on Android.

[hexnt]

Hi, I second this, especially as for the QR code being displayed under the text. When I try to share files with people having larger font set on their Android devices, the QR code cannot be read which prevents sending. To circumvent this - people have to change their screen size font every time sharing/receiving files. There could be a possible quickfix to bring the QR code component Z index up so the layer is always at the top if preparing assets for different resolutions is not an option at the moment.

[spieglt]

I'm not sure how to do layout properly for larger font sizes, I'll have to research. And I won't get to this until after I'm done with the Bluetooth rewrite. However, once that's out, if both devices have Bluetooth, they won't need to use a QR code, which will hopefully be a workaround for some people at least.

[spieglt]

Adjusting the Z index is a good idea, will keep it in mind. Thanks.