Update submodules: plugins (new commits)

plugins:
    fd77153 Greg Holmes <greg@dmdirc.com>
            Use events for frameinfo in popout frames.

            Gerrit: http://gerrit.dmdirc.com/3762

    84b7008 Greg Holmes <greg@dmdirc.com>
            Remove unused frameinfolistener from webui.

            Gerrit: http://gerrit.dmdirc.com/3761

Change-Id: Ia07bcffdce38084f5f9ef03db91a4c96fef4d232