should be able to flash-message if something's already been published.

[Kongaloosh]

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 1073, in run
    self.function(*self.args, **self.kwargs)
  File "/home/deploy/kongaloosh/pysrc/posse_scripts/bridgy.py", line 38, in bridgy_twitter
    raise KeyError("There was no url! {0}".format(syndication))
KeyError: 'There was no url! {u\'error\': u"Sorry, you\'ve already published that page, and Bridgy Publish doesn\'t yet support updating or deleting existing posts. Details: https://github.com/snarfed/bridgy/issues/84"}'```