Allow using the native HTML5 datepicker
update documentation for html5 datepicker
add documentation about html5 date input option to config file as well
use correct id attribute in date input fields
allow autoreloading for external filters on html5 date inputs as well
Format DateTime and Date objects correctly in html5 date input fields
Merge pull request #194 from eikes/Issue-181-HTML5-datepicker

Issue 181 Add HTML5 datepicker as helper_style option