workflows: add missing license

* Adds missing license information in templates and workflow
  tasks and also correcting license years.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
workflows: update HTML attribute

* Updates the HTML attribute used in TD elements in row_formatter
  to conform with standards.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>