Passwords are not hidden by the Html.

Use FormRow and Form to avoid self-foot-shooting.
Removing type specific tests in FormRowTest.

These will be placed in individual test classes.
Adding FormRowTextTest.
Adding FormRowPasswordTest.
Adding FormRowHiddenTest.
Adding FormRowSubmitTest.
Adding FormRowCheckboxTest.
Adding FormRowSelectTest.
Form docblock improvements.
Removing type-specific tests from FormTest.

They are covered by the FormRow tests.
Adding FormRowTextareaTest.