* ImageButton Implementation
* [Android] rename BorderBackgroundManager
* [Android] copy AspectFill changes to ImageButton
* [UITests] fix order of gallery pages to work with tests
* [Android] Account for changing image region with border/shadows
* [Android] check for api 18 and add setpadding call back in
* [Android] throw exception instead of crash when image fails to load
* Addressing issue comments and adding additional test cases to Issue demo
- fixes#1724
Shane Neuville
ShaneN