Added UIAlertView to Controls Example App

Added UIAlertView to the Controls example project, with a Scenario to recreate the problem that UIAlertViews cannot be selected by Frank when the device is in landscape more, as referenced here:

https://groups.google.com/forum/?fromgroups=#!searchin/frank-discuss/UIAlertView/frank-discuss/Xvh82tsH6Yo/-5KEgySRGKUJ