VAST IMPROVEMENTS:
1) improved overall iCloud Integration (currently supporting images of all types being stored and retrieved from the ubiquity container
2) Initial integration of movement towards a UIDocument model for processing iCloud artifacts (currently all images -> hence the "ICloudImage" subclass of UIDocument
3) Improvements to "ImageStore" result in asynchronous listeners (LibraryGridItemView, WhitebordViewController, RadarViewController, PhotoDisplayViewController, PhotoView -> ICloudUIImageView new class introduced)
4) Improvements to the processing of "keyValueStoreDidChange" on the AppDelegate to only care about KV pairs that had been changed
5) Improvements to the responsiveness of the LibraryGridViewController and the WhiteBOrdViewController when iCloud changes are signaled

*** objects that are updated on a WhiteBordViewController are not immediately reflected on a corresponding device ***