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.

* 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>

This also changes the behaviour of the look and feel and
textpane font and size preferences and they now require a
restart.

Change-Id: I9fee668306493d49d36f4bfc29a8a819bc44eaae
Reviewed-on: http://gerrit.dmdirc.com/3308
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I35bf8ce93d7be8fb714b1a58adc9dd66672ec717
Reviewed-on: http://gerrit.dmdirc.com/3124
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I3e4fd86a0d19f5167506df5986f7ec256b224820
Reviewed-on: http://gerrit.dmdirc.com/2979
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: I1eea04000294c228a8f66464c89f92c1a7cd5321
Reviewed-on: http://gerrit.dmdirc.com/2605
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: I559bbd9a7e6abdfc73068d4934cfb0fc9f7ce84c
Reviewed-on: http://gerrit.dmdirc.com/2289
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: Id75a4947fe4c2a08460b4ee9e6e481c568d0c6d3
Reviewed-on: http://gerrit.dmdirc.com/2074
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: Ibbed782aaf570bdac2641842ad4bebbc7e285404
Reviewed-on: http://gerrit.dmdirc.com/2050
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager