Deal with errors returned by twitter

[zbynekwinkler]

https://app.getsentry.com/gittip/gittip/group/3531351/

Stacktrace (most recent call last):

  File "aspen/website.py", line 76, in handle_safely
    response = self.handle(request)
  File "aspen/website.py", line 109, in handle
    response = request.resource.respond(request)
  File "aspen/resources/dynamic_resource.py", line 47, in respond
    exec self.pages[1] in context
  File "/app/www/on/twitter/redirect.spt", line 25, in <module>
    assert response.status_code == 200, response.status_code  # safety check
  <unknown> in <module>
  AssertionError: 503

[chadwhitacre]

@zwn It could be that this sort of error is best dealt with after or as part of the accounts elsewhere refactor (#1369).

[zbynekwinkler]

Referencing #1521 to link these together.

[zbynekwinkler]

@whit537 You are right. I've labeled the issue Refactor to group them.

[chadwhitacre]

!m @zwn

[Changaco]

There's not much we can do about these errors.