Remove inline styles on xf:input, xf:textarea, and xf:select elements

[fdintino]

<xform:input> elements currently have style="background-color: transparent; margin:0; padding:0; border: 0" applied on their generated pe-value <input> element when the decorators are applied in javascript. <xform:textarea> and boolean <xform:input> elements are the same, only without the inline border style. These styles should be moved out of the code and into default.css