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.

In preparation for child eventbusses being removed, anything
trying to subscribe to specific windows now needs an explicit
check.

In the process, fixed two issues:

- channel who plugin was sending way too many requests - each
  connection was querying every channel in the client. i.e.,
  with 5 servers open there'd be 5 WHOs per channel...

- ServerFrame stops itself listening when *any* frame is closed.
  So closing a channel window then reconnecting wouldn't offer
  an SSL dialog, because it's already unbound the listener.

Issue DMDirc/DMDirc#662

DMDirc/DMDirc#426

Change-Id: If1bc20d15561584c9296ad10f04957efb51c5966
Depends-On: I6ef45d10a4fe862854702eee671114ee09f01d4d
Reviewed-on: http://gerrit.dmdirc.com/3867
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>

Change-Id: I40cef875397bfc5d0d0221edefabb910dcacbb77
Reviewed-on: http://gerrit.dmdirc.com/3785
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I4e9a1bff765c0bd62caf284a028932cd8461632c
Reviewed-on: http://gerrit.dmdirc.com/3772
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I2cf35d5859c85c3609002f126241536fda5d588e
Depends-On: I2baa7e986ded54930093768238ed24cab8cf4bf7
Reviewed-on: http://gerrit.dmdirc.com/3770
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: Idc00a4321e228bad7983dc5cd7434860cf065010
Reviewed-on: http://gerrit.dmdirc.com/3705
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: I6453c289eece5c6da8a2900e11a2bd4a6f5baafc
Reviewed-on: http://gerrit.dmdirc.com/3505
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: Ia38d07c944c77b32ec111003b5271efc4256b6b2
Reviewed-on: http://gerrit.dmdirc.com/3485
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: Id258151e854d13b1fdadf02eb26b6be21144e5a8
Reviewed-on: http://gerrit.dmdirc.com/3483
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager