#71 htmlfill.render() does not clear <input type="text"> fields

[Marius Gedminas]

When the defaults dict passed to htmlfill.render() is empty, and force_defaults=True, htmlfill clears <textarea> fields (as well as checkboxes, radio buttons, and select fields), but leaves the value of an <input type="text"> alone. This is inconsistent and, IMHO, buggy. The same applies to "hidden" and "password" fields.

I'm attaching a failing test.

[Marius Gedminas]

patch with failing test for input type="text"

[Marius Gedminas]

patch with bugfix for input type="text" and "hidden"

[Marius Gedminas]

patch with failing test for input type="password"

[Marius Gedminas]

patch with bugfix for input type="password"

[jab]

patches applied in r3787