Add support to Open Badges 2.0 platforms

Requirements 2 accounts on badgr.io and one account on backpack.openbadges.org mailcatcher (or similar or working mail) to intercept mails The first part of this test (the Mozilla backpack connection) will not work on a local host Moodle; it must be online. Setup Login as admin. Access to "Site administration | Badges | Backpack settings" and make sure the site backpack is set to "https://backpack.openbadges.org/" . Go to "Site administration | Badges | Add a new badge" and create a badge at site level. Add a criteria to the badge so it can be manually issued by role. Set an expiry for the badge a few days in the future. Add an Alignment to the badge. Enable the badge. Issue the badge to another user (we will call them student1). Login as that other user. Make sure you can read emails sent to the email address for this user. Go to Preferences (from the user menu). Go to backpack settings. Add the email address for the backpack.openbadges.org account as the email address for the backpack connection. Read the verification email and click on the link to verify the connection to the backpack. View this users profile page. Click on the image of the badge awarded to this user. Click on the "Add to backpack" button.   Login into the backpack.openbadges.org  Check the badge has been sent to the backpack Test Login as admin Access the "Site administration | Badges | Backpack settings" page and change the admin setting "badges_site_backpack" to "https://badgr.io" Access to "Site administration | Badges | Badges settings" and add one of the email addresses for the badgr accounts as the Moodle admin setting "badges_defaultissuercontact" Go to "Site administration | Badges | Manage backpacks" Edit the settings for the badgr.io backpack. Enter the password that matches the email address for this badgr account. Login as the user who received a badge already (student1) Verify you can view your badges in your profile. Go to Preferences (from the user menu). Go to backpack settings Disconnect the backpack Connect to the new backpack by entering the "other badgr account email address and password". Read the verification email and click on the link to verify the connection to the backpack. View this user's profile page. Click on the image of the badge awarded to this user. Click on the "Add to backpack" button. Login to badgr.io with the same "other badgr account email address and password" and verify the badge now exists in this backpack.  Verify the badgr badge has a matching expiry date and ( shows the same Alignments for the badge ).  Verify the badgr badge lists the same criteria for the badge. In badgr create a public collection and add some badges to it. In Moodle go to backpack settings. Verify the new collection from badgr can be displayed in Moodle Add the new collection to the "collections from your backpack to display on this site" and save changes. Verify the badges in the collection now show in Moodle under "My badges from other web sites" on your profile. Click on a badge from the collection. Verify the details of the badge are correct. Login as admin Access to "Site administration | Advanced features" and disable badges (turn admin setting enablebadges off) Login as student1 again Verify no badges are shown on your profile page.     ^^ The Mozilla backpack will stop working soon (May/June 2019 approx)