[Kst] [Kst-plot/kst] ef7c9b: fix bug 325314

[Barth Netterfield]

  Branch: refs/heads/master
  Home:   https://github.com/Kst-plot/kst
  Commit: ef7c9bfb387b0969237557915765c7b07461bd94
      https://github.com/Kst-plot/kst/commit/ef7c9bfb387b0969237557915765c7b07461bd94
  Author: Barth Netterfield <netterfield at astro.utoronto.ca>
  Date:   2013-09-26 (Thu, 26 Sep 2013)

  Changed paths:
    M src/libkst/vscalar.cpp
    M src/libkstapp/labelitem.cpp
    M src/libkstapp/labelitem.h
    M src/libkstapp/mainwindow.cpp
    M src/libkstapp/scalardialog.cpp
    M src/libkstapp/scalartab.ui

  Log Message:
  -----------
  fix bug 325314

Update labels with scalars, even if there are no plots with vectors
that need updating.