Previously, messages weren't stripped at all. This
caused most bots to break and send replies similar to
"I didn't understand your command". Nobody noticed,
because the tests were only validating that replies
were sent, but not the content in them. Thus, this
commit also adds tests to avoid further regressions.
This is the first step in validating the bot responses for the
botserver. The default value for `message` was nonsense and
wouldn't trigger a bot in real life. Additionally, we'll want
each test to use a proper message tailored to the test. Thus,
this commit removes a 'default' message alltogether.
Previously, the Botserver determined which bot to run by dispatching on
a unique URL endpoint /bots/<botname> for each bot.
Now, instead, the Botserver determines which bot to run by the section
header of the bot in the flaskbotrc.
