Don't finalize address on blur; finalize on send
documentation
Allow doubleclick on address to edit
No need for separate init(), since it is only called once
Fixes for blur behavior

Doesn't work perfectly, since clicks on address elements will lose focus
on input.  Not a big fan of the current behavior personally (shading
when inactive), and it makes it difficult to do anything other than
basic browser behavior.

We may have to switch back to non-blur styling for autocomplete inputs.
More image placement fun