Tokentextarea2: Remove width style attribute as part of _destroy()
Tokentextarea2: Test _setOptions(), _destroy(), and form reset
Tokentextarea2: Tokenize in response to "change" event
Tokentextarea2: Add grouping extension
Tokentextarea2: Do not do grouping on non-wrapped elements
Tokentextarea2: Implement _destroy() for grouping extension
Tokentextarea2: Add grouping tests
Tokentextarea2: React to addition/removal of button
Tokentextarea2: Add option to link to a page
Tokentextarea2: _setOptions() must always chain up
Tokentextarea2: Implement _destroy() for link extension