Object Viewer: (1) Aborted attempt at limiting tab width, (2) Fix to switching to new tab.
Bug Number: n/a
Release notes (y/n): no
For Release Nums: 7.1

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(1) Aborted attempt at limiting tab width.
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I'm not having any luck effectively limiting the width of tabs.  This is 
done through the "CSS-like" style interface.  Unfortunately, the text 
alignment can't be changed from "center", so this isn't useful.  Here 
are two screenshots ... with and without left-eliding:

http://cadswes2.colorado.edu/~philw/2017/BorLc7-Win/2017-05-16/LimitTabWidth-Bad.png
http://cadswes2.colorado.edu/~philw/2017/BorLc7-Win/2017-05-16/LimitTabWidth-Bad2.png

Online, just about every thread about this makes the same suggestion (i.e. 
what I tried) and then concludes that custom drawing of tab content would 
be necessary (which we are not currently doing).

In this commit, the application of CSS-like styles to our ObjTabBar
was broken out into its own new method:

  void OpenObjectDlg::updateObjTabStyles();

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(2) Fix to switching to new tab.
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Programmatically setting the current tab WAS NOT ALWAYS causing that
tab to be scrolled into view. Some enhancements were made to the 
following method to fix this:

  void OpenObjectDlg::selectObjTab (SimObj* refObj)

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