Refs #243 - Experiment with making ABP run on Firefox for Android

To try this out install web-ext

> npx gulp devenv -t firefox
> cd devenv.firefox
> web-ext run -t firefox-android --adb-device <DEVICE ID> --firefox-apk org.mozilla.fenix

In my testing I had to go to the addons manager and disable and re-enable the addons. Otherwise I was running into weird issues.