merging and fix group column in table

amd/build/header.js

amd/build/suivi-table.js

classes/form/edittable_form.php

classes/output/course_format_iena_table_option.php

classes/output/courseformat/content/section/header.php

lang/en/format_iena.php

lang/fr/format_iena.php

pix/bar-progress.png

pix/bar-progress_svg.svg

styles.css

suivi_unit.php

templates/courseformat/content/section/header.mustache

templates/modal-details.mustache

templates/suivi-table.mustache