Issue #750

This is just an IntelliJ refactor, using EventBus in place of
DMDircMBassador whenever possible.

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.

This is IDEA's automatic inspection, so stuff may be a bit wonky.

Remove most references to Server.

Change-Id: I8888522d58ff4d332c4a477702442c29a82d12ff
Depends-On: Ic0e6e5f95adc30e773945c95e73d321d589503d2
Reviewed-on: http://gerrit.dmdirc.com/3872
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: Icd1b2e56b740d27af85f82563f9eef06f33a1914
Reviewed-on: http://gerrit.dmdirc.com/3698
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Depends-On: I4d3d94c3dc60690a958a5b2fc8534c35c1f8b61e
Change-Id: Ifa74a7522db34719b18372846f8b8598fc3152b9
Reviewed-on: http://gerrit.dmdirc.com/3589
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>