include input elements w/ type="tel" or "number" when encoding form value
include input elements w/ type="tel" or "number" when encoding form value

Summary: Right now JX.DOM.convertFormToDictionary will skip over input
elements with type="tel" (or type="number"), which are valid values for
that attribute according to http://dev.w3.org/html5/markup/input.number.html
and http://dev.w3.org/html5/markup/input.tel.html.

This makes convertFormToListOfPairs include those input elements.

Test Plan: used in subsequent change which uses input type="tel" in
conjunction with JX.DOM.convertFormToDictionary.

phacility/javelin,phacility/javelin,phacility/javelin,phacility/javelin,phacility/javelin