- the name/label field will accept mixed content, e.g. "BM-...;Contact-Name"
- the address field accepts only addresses and namecoin ids
- the next item in a multi-input (e.g. "BM-...;BM-...") will automatically display the corresponding label or address
- set the new To-row to grey, to indicate that it is not in the recipients list yet.
- don't send when there is still text in the "new recipients" row