add getCurrentNote() frontend API, #444

src/public/javascripts/services/frontend_script_api.js

@@ -204,6 +204,12 @@ function FrontendScriptApi(startNote, currentNote, originEntity = null) {
      */
     this.getCurrentNoteContent = noteDetailService.getCurrentNoteContent;
 
+    /**
+     * @method
+     * @returns {NoteFull} currently loaded note in the editor (HTML, code etc.)
+     */
+    this.getCurrentNote = noteDetailService.getCurrentNote;
+
     /**
      * This method checks whether user navigated away from the note from which the scripts has been started.
      * This is necessary because script execution is async and by the time it is finished, the user might have