Update submodules: plugins (new commits)

plugins:
    27910de Chris Smith <chris@dmdirc.com>
            Initial work removing calls to getOptionColour.

            Gerrit: http://gerrit.dmdirc.com/3076

Change-Id: I62ada106aacfc41a748e4ff86aa7c213107e133f

modules/plugins

@@ -1 +1 @@
-Subproject commit e46d8e694fc7ad27e624fec1a07e53344362e228
+Subproject commit 27910de71dcf2b9f591145b1ead733fad39244c5