Use `sudo -E -u www-data php occ` everywhere.
Motivation: this should work on more appliances like also inside docker containers.
Signed-off-by: Simon L. <szaimen@e.mail.de>
- Change all `.. figure::` elements to `.. image::`
- Add empty `:alt:` so it is clear to screen readers that the images are decorative and don’t duplicate content
- Update styleguide with that info
Signed-off-by: Jan C. Borchardt <hey@jancborchardt.net>
