RAD-173 Prevent empty report body
RadiologyReportValidator prevents an empty report body when completing a
report, so a completed report always has a report body.
* adjusted RadiologyReportValidator to fail on empty report body
* adjusted radiologyReportForm to show error spans properly
* use jquery in tinymce init
* autowire RadiologyReportValidator since its already available as component
* fix error in RadiologyReportFormController, did not make proper use of the
Validator