Temporary local override. [1797]
Disallow some chars in favorite bundles manager.

The following characters can no longer be entered as a subcategory name:

\ / : * ? " < > |

Also modified some McVTextField methods to make use of varargs
(makes things a little easier to use).

[1797]
First try at updating histogram when units change.

There are still a few problems, but things kinda work:

* You have to change tabs to force the histogram to redraw itself.

* The histogram tab still doesn’t get built until the user tries
clicking on the tab (thanks, Mike!)…but there’s currently a “data load”
every time the histogram tab is visited.

[1794]