Ability to configure menus/elements

[frumbert]

Problem
Can't select which menu items appear

Solution
Add a configuration object in the createWysimark function

Use Case
Ability to turn off features that don't need, e.g. uploads, links, tables, headings.

Alternatives
Wanted to use a loaded event to know when the editor was initialised and then use dom methods to remove the menu nodes manually. Since none of the menus are named, classed or otherwise identifiable in any sensible way, it's a case of counting through dom nodes and removing specific children using indices.