Merge pull request #400 from bhariharan/unstable

Custom PasscodeActivity should not be tied to the lifecycle of PasscodeManager
Fix for session expiration in remote VF app
Shouldn't refresh() here, should rely on the 302 redirect to refresh
We were comparing a String to an int
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Merge pull request #402 from bhariharan/master

Fix for session expiration in remote VF app
Merge branch 'master' into unstable