Adding migration of file structure.
Merge branch 'master' of https://github.com/Alfresco/alfresco-android-app
Completed file migration code.
Added comment and deprecation to getOldDownloadFolder()
Pull request review changes
Changes as per pull request review:  Removed @deprecated again, added
logging to file transfer method.
Merge pull request #60 from ldjagger/master

File migration code