data-provide="markdown-editable" is intended for inline editing of page
content à la contenteditable. When this is applied to a textarea, the
editor is loaded only after the user clicks on the field. This behavior
breaks focus and is incompatible with keyboard navigation.
Absolute URLs may be potentially breaking functionality, eg in case of
sub-directory installation.
Fixes https://github.com/openSUSE/osem/issues/2472
Co-authored-by: Ana María Martínez Gómez <anamaria@martinezgomez.name>
