Make forms for add and edit scrollable

Hi,
Just a little cosmetic fix.
In the current version it is not possible to scroll in the add and edit activity. If the keyboard is shown, some of the forms content may be hidden (it is on my screen) and one has to close the keyboard to get to those hidden form elements.
I solved it by wrapping the form inside a ScrollView. I've been using it in the past few days without problems.