use rails footnotes for infopark developer bar

+ adds ntoes for dashboard, object class information, dev center link
and support link
improvements and changelog update

+ use relative path to dashboard
+ update order of items in the developer bar
Merge branch 'feature/developer-bar' into develop

* feature/developer-bar:
  improvements and changelog update
  use rails footnotes for infopark developer bar

Conflicts:
	CHANGELOG.md