pages: Adapt urls of tagged images

For tagged images, the URL to the image on images.apertis.org has to be adapted because the images are copied to another folder once they are tagged. This is necessary to keep them from being removed by the clean-up process.

For releases, the version . is replaced by the release number .. E.g.: 20230524.1145 is replaced by v2023.1 and the daily folder by the release folder.

For weeklies, only the daily folder is replaced by the weekly folder.

https://phabricator.apertis.org/T9682