Stop swimming against the tide and accept what most of the rest of
the world does.

While it adds an annoying depth to the actual source code, it makes
the root directory nicer (no more 'test-res' dirs), means we don't
have to override the gradle config, and makes it nicer to work in
IDEA 2016.1.

Using docker we can bring up and tear down IRCds pretty trivially.
This allows us to test the parser in real-world situations.

Using project('irc') doesn't work properly in a multiproject env.

Change-Id: Id4fd006efa7802e7972bf9f21c60d41ef48bceae
Reviewed-on: http://gerrit.dmdirc.com/4086
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>