Inject the UpdateManager in a few places.

Change-Id: I3e8ef2b132980a41c7511228f71bcf8abea65697
Reviewed-on: http://gerrit.dmdirc.com/2934
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Bye bye, badly implemented rule.

Change-Id: Iab3c332ddb5cfd816cc0792af53f9be8d47e2679
Reviewed-on: http://gerrit.dmdirc.com/2935
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager
Update submodules: plugins (new commits)

plugins:
    f7cd4ab Chris Smith <chris@dmdirc.com>
            Use Connection iface in place of Server.

            Gerrit: http://gerrit.dmdirc.com/2933

Change-Id: I35aaa56092207b1ab7753d7234059cb1ef3501d3