chg: usr: disabled SSL if drawio service has HTTP protocol
chg: usr: disabled SSL if drawio service has HTTP protocol

Disabling SSL can help use on using local drawio installations.
Now you can use a local installation without the need to create a
certificate.
Do not use HTTP protocol if your drawio is exposed to Internet.

mikitex70/redmine_drawio,mikitex70/redmine_drawio,mikitex70/redmine_drawio