Calendar breaks in Swedish because short day names / month names are not defined

When using JIRA with default language set to Swedish there is a JavaScript bug when trying to view the calendar for a field with the date populated.

This happens because we try to call Date.parseDate before the Calendar is properly set up and Calendar._SMN is still undefined.

Repro steps:

• Set language to Swedish
• In issue navigator, enter a date in one of the date search fields
• Search for issues
• Click on the calendar icon next to the date entered - calendar doesn't load
  (note if you click on the calendar for an empty field, then the populated one, it works because then Calendar._SMN is populated)