Big refactoring.
main fix : nb guest
Change visibility private to public static
Add multiple rows to answer and invit guest
Add / Fix bug
Refactoring
Debug
Avancement dans le porjet
Delete old files
Use user hash instead of using email (could be NULL !)
Add lib to format num tel
Refactoring : use the same database field as other main part of the
application
Cleaning...
add users table (new field hash) and move views in directory
update views to fetch the new field "hash"
remove empty email fake
Fix bug