Config: removed halt_compiler command.
Controller: Added comments for the interface.
Added comments for user controller.
Removed extra parameter from select function.
Debug configuration option
Secured all input/output.

Changed the deprecated mysql_escape_string with a custom one.
Session: Fix resetSession notices when reseted.
User: Fixed logout notice being always shown.
Merge pull request #1 from NioniosFr/master

General fixes