View Document As doesn't refresh when changing tabs

[waxhead]

To see this, open two files, the first one should be a perl file.

Check the View/View? Document As, it should be Perl 5.

Next open a text file.

Now check View/View? Document As, it should be Text.

Now go back to the Perl 5 document, check View/View? Document As. It's still Text.

We need to have a refresh on the changing of the tabs for the View Menu.

[waxhead]

This should now be fixed.

Committing change, will check again over the weekend.

[waxhead]

committed as 11083.