Adds PUT and DELETE calls to Web component, plus minor changes in internal methods

Change-Id: I74cb511921b222cae57b38783c414587824ac6cf
Fixes a problem resizing Images inside other containers such as Buttons, Canvas, and Screen
background. They used to get clipped instead of resizing correctly, only in the
Designer.

Change-Id: I445c542b5fcc158b28b3306bf97e3a53a4f125a0