Form_Field: setProperty->setAttr
Form_Basic: setProperty->setAttr
Form_Field: allow setAttr(array)
Form_Field_Slider: setProperty->setAttr
Form_Plain: setProperty->setAttr
Form_Field: finish
Form_Field: fix for null values
Form_Field: nicer :)
Form_Field: ... but wrong :)))
Merge pull request #243 from DarkSide666/patch-6

Form_Field: setProperty -> setAttr