Merge pull request #1 from mbresson/master

Initial commit
Merge pull request #2 from mbresson/master

Added database class
Merge pull request #3 from mbresson/master

Added basic security functions
Merge pull request #4 from mbresson/master

Updated Database class to make it easier to use: Database::initialize();...
add the form in connexion.php, connexions function in core/Account.php
Added function documentation and switched from fetchAll to fetch when it was more handy