Refactored exiting code when all doc processing is done
Asynchronously save documents in UX; added switch and plus sign for create new obj in BOSelectVC; varying duration for UIHelper info/error box
Implemented LRU for freeing up memory mainly from Inbox VC in case of memory warning.
Compress image data size for documents
Image compression for Document
Load document data from stored file instead of retrieving remotely every time; use much smaller thumbnail image for document icons in InboxVC; set default org on LoginVC even if there's only one org.