Figure out better place to init for Django apps

[untitaker]

from #19

[untitaker]

actually @dcramer I am confused about the motivation for this. Do you want to capture exceptions happening during import of the application?

[untitaker]

One thing to note is that we monkeypatch Django anyway, we don't really rely on things like middleware order (because we want to capture as much as possible)

[untitaker]

I'm closing this because the SDK is now released as-is and this issue is non-actionable as it stands.