Auto serialize tags into a field and submit with parent form

[ioncache]

Allow the TagHandler to store the serialized values of the tags when submitting a form.

Add some options:

• formID: ID of the form that the TagHandle will use to hijack the submit function and store the tag data in. If this field is left undefined but the fieldName option isset, then the TagHandler will use the parent form of the TagHandler.
• fieldID: ID/name of the input field to store the tag names in when submitting. This field could exist in the form already or be auto-created by the TagHandler on the fly.

[ioncache]

If the formID option is undefined, then the parent form of the fieldID element should be used instead of the parent form of the TagHandler

[bluee]

Have this been implemented yet?