Review Comment - Added New Method getAsLong in DataHandler. Added
implementation in both Json and Xml data handlers. The method is used in
FileService Connections for getting the size of the file.
Merge branch 'master' of https://github.com/OpenNTF/SocialSDK.git
Added FileConstants file for managing the constants. ReviewComment.
Merge pull request #437 from VimalDhupar/DefectFix139-140NewBranch

Defect fix139 140 new branch