basic implementation of ICE failure notifications in chat window
added missing tests for NotificationView
added link to ice candidate state specification
Add a config class to the functional tests to manage loading the test config and handle calculated configuration values
Add a configuration option for the ignore time of the conversation window, and use it to shorten tests
Fix pyflakes issues
Use an alias for DEFAULT_WAIT_TIMEOUT to simplify code
Update the version of Firefox to download, now that FF 28 is on nightly
Merge branch 'master' into timeout_depends
Merge pull request #293 from Standard8/timeout_depends

Use configuration to determine timeouts for functional tests
Merge with master
Merge pull request #281 from n1k0/failed-ice-connection-notification

ICE failure notifications in chat window
Server: move the SESSION_SECRET to env vars

This does not fix the fact that the session secret is actually secret at
deployment. For now, in production it will use the session secret available in
.awsbox.json.