Update submodules: plugins (new commits)

plugins:
    d6596c0 Greg Holmes <greg@dmdirc.com>
            EventBus some more logging.

            Gerrit: http://gerrit.dmdirc.com/3709

Change-Id: I7ecf7e081e8b4cadef58c4725d65571fd448302c
Update submodules: plugins (new commits)

plugins:
    b1a8a15 Greg Holmes <greg@dmdirc.com>
            EventBus logging for the prefs dialog.

            Also fix a couple of things IDEA complained about.

            Gerrit: http://gerrit.dmdirc.com/3710

Change-Id: I96ea323587a35b323722a57bd83f0e523ff4395d
Update submodules: plugins (new commits)

plugins:
    50a0800 Greg Holmes <greg@dmdirc.com>
            Tidy up StringTransferable.

            Gerrit: http://gerrit.dmdirc.com/3711

Change-Id: I589d2a2dedf99ce925fd50836235c3c832e05aed
Update submodules: plugins (new commits)

plugins:
    0c4394a Greg Holmes <greg@dmdirc.com>
            Tidy about dialog.

            Gerrit: http://gerrit.dmdirc.com/3712

Change-Id: Ia77f74a8837b73cc0c65826e06578d624e8b840e
Update submodules: plugins (new commits)

plugins:
    114ae7a Greg Holmes <greg@dmdirc.com>
            Remove logger and tidy a bit.

            Gerrit: http://gerrit.dmdirc.com/3714

Change-Id: I5be89815ed0b4eb253df4d14b66f255062087813
Update submodules: plugins (new commits)

plugins:
    c1dd4fb Greg Holmes <greg@dmdirc.com>
            Remove some loggers, tidy up.

            Gerrit: http://gerrit.dmdirc.com/3715

Change-Id: I20b2f3ab80136953095b6644df7bf4684cc777e0