Nice addon, will for sure be usefull.
Just a few things:
The installation (normal, not the beta) would not update the website, after the click on „Install ShellInABox“.
It just ends up looking like this:
After reloading the page manually, it’s installed. (Worked on one of my two raspberrys at the first try, for the second one, i had to click „Install ShellInABox“ again)
Once it’s installed, i had to open the console in fullscreen to get the button to add an exception. In the small box, the button won’t show up. After adding the exception, it also works in the small box.
It’s working fine so far, i just noticed a small bug: Certain keys won’t work. For example the minus key left of r-shift.
Just some info about my 2 systems:
Testet in Firefox 48.0
2 x Raspberry Pi 3, Max2Play 2.34 (non beta)
Both with the latest kernel and packages: „Linux max2play 4.4.16-v7+ #899 SMP Thu Jul 28 12:40:33 BST 2016 armv7l GNU/Linux“ (Updated both from the „Raspberry Settings“ page.)