Added $info array initialization with default values for proveedorId and prodCatId to prevent 'Trying to access array offset on null' warnings in search-productos.tpl and enumProdCatSearch.tpl templates.
- Fixed undefined array key warnings in usuarios-agregar.php - Fixed undefined variable warnings (, , ) - Fixed null array offset warnings in db.class.php GetSingle() - Added default parameter to ValidateMail() in util.class.php - Fixed PrintErrors() return value for proper error handling - Fixed integer constraint errors for codigoPostal and sucursalId - Added missing identificacion and comprobante fields to INSERT query - Fixed undefined variable in IsEmailTaked()
