* fixed issue where signing user in did not check for empty field ;

* fixed issue where signing user in never load user posts because MySQL connection was closed and never re-opened;
* fixed issue where signing user in checked if password and username match database data but never return false when it doesn't;
* fixed issue where main screen did not display proper information and buttons wether user has social accounts added or not;
+ added brand new user facebook main screen
+ added function to list user facebook post in user facebook screen;
+ added fuction to add a post in user facebook screen.

Ongoing issue :
Context.userposts need new methods to add newly added posts.