Frame hydra:statusCode, ...

... without it "[object Object]" is displayed on the "Invoke an Operation" modal.
Don't confuse element URI and element definition in showOperationsModal.
Merge branch 'template-syntax-error'

* template-syntax-error:
  Avoid SyntaxError from the browser.
Merge branch 'frame-statuscode'

* frame-statuscode:
  Frame hydra:statusCode, ...
Merge branch 'show-operations-element'

* show-operations-element:
  Don't confuse element URI and element definition in showOperationsModal.