Confirmation button for field input

[prensing]

It would be really helpful if OutlineViewer has an input confirmation button beside each field. So, if you are editing a field, particularly a number or string, have a Done button to finish/confirm the entry. Might need a "cancel" button too.

The reason I am asking: if the FRC DriverStation is running on the same computer, then the Enter key disables the robot! This makes using OutlineViewer (which I really like) to adjust parameters, etc on a running robot near impossible. Having a pure GUI way of confirming a field edit would solve this.

[virtuald]

YES. Related to #70