High-resolution image for a badge (f3) should be sent to external
backpacks through JSON and WS methods.
Besides, when a badge is cloned, the high-resolution image should be
used to avoid the copied looks blurry.
In MDL-67971, issuer_json.php was created, to display issuer JSON content.
However, some files were still using action=0 to display this information.
It has been replaced by issuer_json.php.
The action=0 support won't be removed (at least for now), because several
public badges URLs are using it.
This commit combines several changes:
* Show authentication errors.
* Show more detailed authentication errors
* When the site backpack is different to the user backpack, show a warning
* Do not duplicate the apiversion and backpackurls in each user backpack.
* Do not support different issuer information for each badge with Open Badges v2.
* Add obversion to assertion url
* Combine separate badges upgrade steps and bump the version number.
* Don't show private collections.
* Push the larger image size to backpacks (512x512).
* BADGE_BACKPACKURL is deprecated
* Don't use property alignments, only alignment
Upgrade the support for Open Badges 2 to support a real open badges 2 backpack.
Moodle can only talk to one backpack at a time, so after switching backpacks, users
will have to manually disconnect and then reconnect their backpack to the new one.
This commit combines several changes:
* Split classes into badges namespace
* Publish expiry data with a badge
* Publish badge alignments in badges exported to the backpack.
* Export the criteria for a badge to the backpack.
