This replaces the old general.showrawwindow setting.

Closes DMDirc/DMDirc#753

* 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: I421391f9eef53b582838b7dc8471f4ad737c38e7
Reviewed-on: http://gerrit.dmdirc.com/3236
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Issue CLIENT-103

Change-Id: Ic046375a8bf417ac84a0a736f64661cbbcdaa08f
Depends-On: I0828dd46c1315a4ae475d23a6152dc8183e1ab09
Reviewed-on: http://gerrit.dmdirc.com/1699
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

Tidy up sevreal classes
Add checkboxmenu item
Change menu bar so plugins can add items.
Add update ID to notifications plugin

Fixes issue CLIENT-80

Change-Id: I289bbf7bcad6d9c528eb353dc8cf49ad48954a65
Reviewed-on: http://gerrit.dmdirc.com/1559
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: Chris Smith <chris@dmdirc.com>

Fixes issue CLIENT-70

Depends-on: I75eedbd9966d08d1f600b78f63ece76ad0b27126
Change-Id: I155eede0f29c9dcf2155542c6cc7817ccea096b0
Reviewed-on: http://gerrit.dmdirc.com/1543
Automatic-Compile: Greg Holmes <greg@dmdirc.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>