(All Day) : the parantheses are hardcoded

What / Issue : while 'All day' is localized (can be translated by an admin on the site), the ( ) around it are hardcoded.

To get rid of them, I had to modify the file: date/date_all_day/date_all_day.module

function theme_date_all_day_label() {
  return '' . t('All day', array(), array('context' => 'datetime')) . '';

The original was :

function theme_date_all_day_label() {
  return '(' . t('All day', array(), array('context' => 'datetime')) . ')';

It is not a major issue, but ideally that should be easier to theme. In the previous version, I simply modified it using the locale.module in core Drupal. Alternatively, if they have a CSS style, they could be made invisible, but that would be a lot of bytes for only two ().