added a test on password.
tested for select/radio/checkbox. and then
refactored to use Element_{Select|Radio|Check}.
in other words, I forgot to commit for some time.
added multiple value test for check/select.
(test fails for the test_select_multiple's last test.)
normalize the class name using $formStyle.
renamed SelectorAbstract to ElementAbstract because it is an abstract for elements.
extends ElementAbstract, which is renamed.
refactored by ElementItemizedAbstract for Select, Radio, and Check elements.
how about making it a public?
created SelectMutiple and tested.
these Date classes uses select box, so extend it.
maybe need it for some classes.
removed unused methods.
forgot to change TextArea to use ElementAbstract. fixed things to work.
another element forgot to inherit ElementAbstract. This one from Element_Input.
removed many code that are no longer used.
(moved to ElementAbstract class).