Fix showConfig for Nick Colour plugin.

This isn't hugely pretty and we should probably investigate a
better way of doing this.

Change-Id: I4644706347084eee101eaeaa494626147b3eae6e
Fixes-Issue: CLIENT-429
Reviewed-on: http://gerrit.dmdirc.com/3154
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>
Adds prefs settings directly from plugin.

Change-Id: Ib24472d974fe597f3ee564995ef18005eb34136f
Fixes-Issue: CLIENT-428
Reviewed-on: http://gerrit.dmdirc.com/3153
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager