Android CloudSession and OAuthData.

2. Better Spinner implementation that now works in a modal fashion on both platforms.
3. Bug fix to test harness to ignore createdBy entries that are null or empty.
4. Made repo browser use listing context due to the large numbers of nodes coming back from some accounts.  20 results are displayed.
5. Added missing Android v1.0 API: DocumentFolderService.retrieveChildrenWithListingContext().
6. Bug fix in PersonService where avatar contentFile can sometimes be null.
7. Removed properties logging for Android, as this slows down the Android services.