Resolve WB-412 Chart Tab and Type Selection: When a SPEC FILE is loaded and at least one file that is able to produce charts was loaded, one browser tab for Chart is added to the window.  Also, in Toolbar:Chart Type, each of the selections (radio buttons) is only enabled a loaded file is able to produce the corresponding type of chart (ie: Matrix is disable if no loaded file can produce a matrix).
Implement request from a comment in WB-412: Implement Surface Menu->Information for Surface Montage.