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 a little bit icky, but I can't see a nicer way to do it.

 - Add a ProgramErrorFactory
 - Add a ProgramErrorErrorManager (I'm awful at names...)

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

Change-Id: I2ae082b9a0a6596615627debd052b80502b92c58
Reviewed-on: http://gerrit.dmdirc.com/3920
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I0c128522391d4de8452c603fae89d260c1a34ec2
Reviewed-on: http://gerrit.dmdirc.com/3836
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: Ie6d110a3413e41bb42516f39e97b6cc11e8a777a
Reviewed-on: http://gerrit.dmdirc.com/3774
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: Id3cfa404a56528542120f79c969d992a5c183aba
Reviewed-on: http://gerrit.dmdirc.com/3771
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I2baa7e986ded54930093768238ed24cab8cf4bf7
Depends-On: I2cf35d5859c85c3609002f126241536fda5d588e
Reviewed-on: http://gerrit.dmdirc.com/3769
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I362e53fc9f05497f48dac4951991b79daebfdb81
Depends-On: Ide5afea6d4e7ba04cf3226f10e1ea530e1a60c10
Depends-On: Ic2a1b97aa44e9168bae4a1e28941208e7711bb46
Reviewed-on: http://gerrit.dmdirc.com/3743
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>