Correctly handle extra app cards
Some boxes enable extra app cards in their settings like BSF Campus or Khan Academy:
EXTRA_APP_CARDS = [
{
'id': 'bsfcampus',
},
{
'id': 'khanacademy',
},
]
It would be much better if those apps were found automatically when they are installed, and we'd automatically enable/disable them accordingly, removing this from the settings.