Update submodules: plugins (new commits)
Update submodules: plugins (new commits)

plugins:
    16b8ca9 Chris Smith <chris@dmdirc.com>
            Remove the Dummy UI.

            This was originally intended for testing purposes, but we can do that
            effectively with mocks. It's a pain to maintain and doesn't offer
            any real benefit.

            Gerrit: http://gerrit.dmdirc.com/2711

Change-Id: I90602ddf6ef3f7a9111163e90a7665fea1492f72

ShaneMcC/DMDirc-Client,DMDirc/DMDirc,DMDirc/DMDirc,ShaneMcC/DMDirc-Client,greboid/DMDirc,csmith/DMDirc,greboid/DMDirc,greboid/DMDirc,greboid/DMDirc,ShaneMcC/DMDirc-Client,ShaneMcC/DMDirc-Client,csmith/DMDirc,csmith/DMDirc,csmith/DMDirc,DMDirc/DMDirc,DMDirc/DMDirc