have custom buttons notify view controller when accessibility focus changes
derive AccessibilityRedirectImage from UIImage and attach to bottom control
add code to send focus to last selected control
status bar fix for earlier versions of iOS that do not support programmatic focus change
Merge branch 'develop' of https://github.com/KomodoOpenLab/BrightOver into iss13
Merge pull request #14 from tnantais/iss13

Work around status bar accessibility problem with VoiceOver