Fixed  Entry text widget height burst and the Font from 10 to 20

Fixed the gravity in iPad version.
On the iPad, FireworksToy now works in any orientation. (Use the rotation lock button if you want to stop the background from rotating when you hold your iPad upside down.)

You can now choose one of your photos to use as a background.

Tip: If you use Safari and your favorite search engine to find night-time city-scape images on the web, you can then save them to your camera roll for use as excellent background images!

Other enhancements:
* full native iPad support
* multi-touch
* better frequency of firework launching