Merge pull request #597 from bhariharan/unstable

Merge branch 'master' into unstable
Making DBHelper one per DB as opposed to just one
Merge pull request #598 from bhariharan/master

Making DBHelper one per DB as opposed to just one across all accounts
Mobile SDK Patch Release v2.2.2
Merge pull request #599 from bhariharan/master

Mobile SDK Patch Release v2.2.2
Merge branch 'master' into unstable
Fix test