MOBSDK-527, MOBSDK-537

MOBSDK-527: constant changed to 1.1.0
MOBSDK-537: JSON parsing error or/and HTTP response outside 200-299 will cause a oauth login fail call on the delegate

Also: 
- some logging msg removed in CloudSession/OAuthHelper
- Sample app and Hello Repo updated with latest SDK
- kCMISPropertyCheckinComment added to CMISConstants.h/m (CMIS lib only)