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.

Depends-On: Ia24b29f2fcd414d7b27bad52cc6fad6312179de5
Change-Id: Ie4bd081e56c12afe66a0f333a36e7f87b1736048
Reviewed-on: http://gerrit.dmdirc.com/4068
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: If2ea25460f39d2ec443e47bb57c61e79715ee82d
Reviewed-on: http://gerrit.dmdirc.com/4051
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I26ca7f22361593650793e9db64d9a1d54ced234b
Reviewed-on: http://gerrit.dmdirc.com/4022
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

* Move all plugins to their own top-level directories.
* Move resources out of source trees
* Add Gradle build scripts.
* Remove ivy and ant build scripts.

Change-Id: Ib69a48ef26800c174ccf51c84ff9d1f73529460f
Depends-On: I303b6b69518468f98d48d835b8f40135d9e4bcbf
Reviewed-on: http://gerrit.dmdirc.com/3850
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>