Jms Multisite for joomla version 1.3.70 - All Editions

Fix a Joomla 3.7 and 3.8 compatibility, when forcing the default language of a slave site, the joomla session was not completly initialized by the core of joomla and we have added those missing initialisation inside JMS to fix the issue.
The symptom was that a message "You are not permitted to use that link to directly access that page (#xxx)."
That affected the edition of all the contents (users, articles, contact, categories, ...)