As the title says add JQuery UI Date Picker to the Authored on field.
The thing about the Authored On field is the it's both a date and a time. Maybe we split them up into both a date and a time field? Hmmmmm. Subscribing.
Moving to 8.x
#504338: Extend Form API's date field with jQuery UI's Date Picker
Use date input type #64020: FAPI date type doesn't support a null date value
http://drupal.org/project/date_popup_authored - maybe this could help
Looks like this may be a lot easier once #1496708: Add new HTML5 FAPI Element : time lands.
At the very least, it would be nice to use #placeholder to help with form input.
Actually my link in #4 was wrong, what we'd need to keep the current behavior is #1496652: Add new HTML5 FAPI Element : datetime-local
(edit) actually this issue would pretty much need to be renamed.
#1835016: Polyfill date input type
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