Reset Button Implementation

[fennifith]

When the reset button disappears, the height of the layout it's inside becomes 0 because the reset button was the only visible view inside it. Since android:animateLayoutChanges only affects views inside the layout, the width of the button is animated but not the height. This makes the transition seem a bit jumpy.

Not too urgent to fix as the dialog is still usable in this state, however it would look a lot nicer if this didn't happen.

[fennifith]

The reset button is going to be absent from 0.1.0. Helps simplify things a little. I'll add it back later.

[fennifith]

I'm not adding this back. It's kind of useless, and I can't come up with a situation where you would actually want this over a button separate from the dialog with the same purpose.