The android build process doesn't waste time running optipng and such, since
it takes minutes to run properly.
I had already ran this a few months ago. Running it again gives an apk ~15KB
smaller, which is welcome. This is because of the new images added.
This is really just a placeholder, there is lots of work to be done here.
Really, this screen should have the SSID of the hotspot, but we need to use
a private API to get that. Coming soon...
The icon is free software from:
https://commons.wikimedia.org/wiki/File:Wifi.svg