Bug: Create package in Package Browser in Idea Space can cause selection of System Browser tabs.

Creation or Uninstall of a Package from the Package Browser while in an
IdeaSpace that also contains a System Browser will cause the System Browser
tab to be selected if a method was previously selected in it.

Open an IdeaSpace. Add a System Browser, select a method so that the method
text pane is visible.  Now add a Package Browser to the IdeaSpace.  Now make
a new package.  Apparently all browsers with methods selected will try to
ensure their visability.  Even browsers in other idea spaces will do this.
To study this problem add a halt to IdeaSpaceShell<<onCardChanged and look
at the call stack.

Chris