- Message data automatic caching
https://github.com/openpeer/opios-production/issues/162
- cleanup of IHelper references
- Fix: Freeze after return from background
https://github.com/openpeer/op-services-cpp/issues/37
Merge remote-tracking branch 'origin/20140401-dev-stable' into feature-20140730-is-composing
Merge remote-tracking branch 'origin/feature-20140730-is-composing' into feature-20140521-push-messaging

Conflicts:
	libs/op-services-cpp
	libs/zsLib