ToolbarItem API in JavaScript DocumentEditor API control

Defines Predefined toolbar items.

• New
• Open
• Separator
• Undo
• Redo
• Comments
• TrackChanges
• Image
• Table
• Hyperlink
• Bookmark
• TableOfContents
• Header
• Footer
• XML Mapping
• PageSetup
• ContentControl
• PageNumber
• Break
• Find
• LocalClipboard
• RestrictEditing
• FormFields
• UpdateFields
• InsertFootnote
• InsertEndnote