[Kst-plot/kst] bb7edc: Changes to export image dialog.

[Barth Netterfield]

  Branch: refs/heads/master
  Home:   https://github.com/Kst-plot/kst
  Commit: bb7edce20162a5c0d03d8b0c128cba5f7cace014
      https://github.com/Kst-plot/kst/commit/bb7edce20162a5c0d03d8b0c128cba5f7cace014
  Author: Barth Netterfield <netterfield at astro.utoronto.ca>
  Date:   2016-08-17 (Wed, 17 Aug 2016)

  Changed paths:
    M src/libkstapp/exportgraphicsdialog.cpp
    M src/libkstapp/exportgraphicsdialog.h
    M src/libkstapp/exportgraphicsdialog.ui
    M src/libkstapp/mainwindow.cpp

  Log Message:
  -----------
  Changes to export image dialog.

Now you can choose to export only the current tab.