Sync Filesystem package to Platform 13.1 (CS Only)
Sync Image package to Platform 13.1
Sync Language package to Platform 13.1
Update Mail package to Platform 13.1
Merge pull request #1748 from davidhurley/master

Cleanup Tests Folder
Sync Registry package to Platform 13.1
Sync String package to Platform 13.1
Sync Uri package to Platform 13.1
Sync User package to Platform 13.1
Sync Utilities package to Platform 13.1
Increment Platform version 13.1