Limitations on SENTRY_KEY not documented

[thraxil]

I assumed that SENTRY_KEY was just any random string that should be unique to a deployment and kept secret (ie, serving a similar purpose to django's SECRET_KEY) so I generated a random string to use there.

It turns out that it's used in a URL for the feeds:

url(r'^feeds/%s/messages.xml$' % KEY, MessageFeed(), name='sentry-feed-messages'),

(in sentry.urls)

Mine happened to have an '[' in it which caused a very confusing error about an unterminated regex.

It should be documented that SENTRY_KEY will make it into a URL (and further that django will try to then parse it as a regexp when trying to do reverse lookups) and thus can't have most punctuation.

[cburgmer]

I have prepared a patch that fixes the regex parts so you would be allowed to pass meta characters.

[cburgmer]

Still wondering how to upload here though.