[Suggestion] Don't use external CDN

[Falci]

The dashboard loads resources from external servers, like getumbrel.github.io:

https://github.com/getumbrel/umbrel-dashboard/blob/8b875dc6e71a36fad7127321dfcdafebf3f67242/src/views/AppStore.vue#L55-L60

I believe we could improve the users privacy if we load the images from the local instance. I didn't check for other resources/servers

[gavinowens]

+1

[gavinowens]

Actually, I think this is so that app developers can update their apps on demand.