R1:fffc1e51d0d8

Inset view controller for inset elements of forms.

Summary:
T937 suggests 'inset' could have its own view controller.

It has the following methods:
- setTitle for title
- setRightbutton if you have to place something (preferably a button)
on the right side of the form
- setDescription if you want to describe what it does
- setContent for the main content
- addDivAttributes REALLY not sure about this one but it had to be included
because of a…