* add and consistently use parseDate and renderDateBadge helpers
also move
- age
- formatDate
- formatRelativeDate
to date.js
* fix bug in wordpress last update badge
* validate in formatDate() and age()
it is going to be unlikely we'll invoke either of these
directly now, but lets calidate here too
* remove unusued imports
* reverse colours for galaxy toolshed
5cdef88bcc