Remove all twitter functionality?

[streadgold]

With iss101 ceasing all twitter updates, we lost our main EVA info source.

Due to that I think we should just remove all twitter functionality. Would make the code simpler, and we would no longer require every user to sign up for a twitter developer account which quite frankly is not very simple and probably a bit too much work to ask from all of our users. Also a pain to maintain that functionality.

Thoughts? Still hoping we can find a web source to scrape some kind of EVA status info from.

[streadgold]

Will be removed (but with the potential to return in the future - reference old commits to retrieve twitter code)