[session] move context manager logic in the security context manager
The `init_security` and `reset_security` method have no other user that the context manager itself. Having dedicated public function is not useful.
$(document).ready(function() {
module("air");
test("test 1", function() {
equals(2, 4);
});
test("test 2", function() {
equals('', '45');
equals('1024', '32');
});
module("able");
test("test 3", function() {
same(1, 1);
});
});