Revert "[#71331632] Changes to make the datepicker work with Rails 4"

This reverts commit 66ed07ae6a00a1efd017be48b95fff4d59cee6ad.
quick patch to use rails 4 tag helpers

(cherry picked from commit 636331e04a9e39e3a367af6ae548837d0b2fa20b)

Conflicts:
	lib/app/helpers/form_helper.rb

See: https://github.com/foodforarabbit/jquery_datepicker/commit/636331e04a9e39e3a367af6ae548837d0b2fa20b
Fixes: Render html element as input field and render id and name on field

- Add back support for altField clearing