A teacher could need to change the code lines offset in order to send back correct review when parsing student code into a template.

Problem : changing the first_line parameter in the template_helper.render() function is effective only after restarting the server.

…rameter not defined

Was checking the value of data-x-first-line only for textareas with code-editor class. Now doing it in registerCodeEditor() function for every case.

…ubmit and apply it to the problem's code block

Was changing the firstline value into a integer or set it to 1 if it was not given. Was oing it outside the registerCodeEditor() function. But as it is used in other places this action wasn't performed each time. Doing this transformation inside the function now.

When the line offset was empty it was retrieved as an empty string. It couldn't be transformed into an integer so an error message appeared. Fixed that.

…ead of task_edit.py

…h default parameter

…ting at 0

Instead of setting it to 1 (default value) we do not store it

Co-authored-by: Anthony Gégo <anthony.gego@uclouvain.be>