Update submodules: plugins (new commits)

plugins:
    5d8489e Greg Holmes <greg@dmdirc.com>
            DI the redirect plugin.

            Gerrit: http://gerrit.dmdirc.com/3219

    849591c Greg Holmes <greg@dmdirc.com>
            DI the parser debug plugin.

            Gerrit: http://gerrit.dmdirc.com/3218

Change-Id: I03bf7b972a3a0195d7cc6bc3a752f3146b72f933
Update submodules: plugins (new commits)

plugins:
    3d59f23 Greg Holmes <greg@dmdirc.com>
            Remove deprecated methods from server list dialog.

            Gerrit: http://gerrit.dmdirc.com/3220

Change-Id: I19c6f2b840ad7046b5bbb673116ea035a085fbeb