Get private token without https

You need to change the following lines in the code to get a Private token even without https.

• https://github.com/moodle/moodle/blob/206023c15f680b2b3b2aab4d36515337491e0edf/admin/tool/mobile/classes/api.php#L350
• https://github.com/moodle/moodle/blob/206023c15f680b2b3b2aab4d36515337491e0edf/login/token.php#L106