DI Calc plugin.

Change-Id: I6b6a14618e16f54e419c6cde78e940755cdcf79d
Reviewed-on: http://gerrit.dmdirc.com/3105
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>
Plugin support for FrameContainer changes.

Change-Id: Ida8887d4065db2f26080986a4c426c6de700d65c
Depends-On: I3b95185db3f7e6ef09a6c4f91cd28c88d2c601ba
Reviewed-on: http://gerrit.dmdirc.com/3106
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager