Fix for AGIOS-150. App should now be able to demonstrate simple upload of a file to Google Drive, updating a file on drive by changing its title & delete a file.
Refactored the code.
Handled authentication denied scneario. Support for iPhone.
Removed workaround for 'Cancel'. Handling revoke button visibility.
Fix for upload image when user is not nil
Multipart upload
Multipart working, comment not relevant now
Merge branch 'AGIOS-150'