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.

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: I46497ad96d16de68370c353c7141a0b15857b664
Reviewed-on: http://gerrit.dmdirc.com/3728
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

If callers specify an implementation then it's the return type they're
concerned about, not the class providing it.

Change-Id: I9d2aa23de47373323cabb362042995f822cd9311
Reviewed-on: http://gerrit.dmdirc.com/3284
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

ServiceLocator allows plugins to provide services really
conveniently.

The LegacyServiceLocator is backed by the PluginManager, and checks
for any compatible @Exported methods in loaded plugins. It will not
try to load any plugins that aren't currently loaded.

Issue: CLIENT-445
Change-Id: I61274dbb0b910509e0e170600e473eb23234bb6f
Reviewed-on: http://gerrit.dmdirc.com/3244
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>