Make Activity Notifications Optional on Tumblr mobile

Instead of seeing blue bubble notifications only when we have messages, now we see notifications whenever someone follows us, or likes, comments, or reblogs one of our posts. It's stressful, it's annoying, and it's impossible to get rid of them without constantly checking your activity page. But, since staff probably won't get rid of it, the least they can do is give us an on/off switch.