* 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
* init GithubCreatedAt service
* render raw created_at
* impl formatted date
* add color
* add test for absent repo
* add `reversed` parameter to `age` color formatter
* inverse the colors of the badge
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Co-authored-by: Studio <studio@192.168.1.20>