Update test to work with 1.5.0 SDK.
Fix memory leak caused by passing activity context to new Thread
Merge branch 'master' of github.com:solcott/apptentive-android into solcott-master
Merge branch 'solcott-master' into next
Fix cast to string error introduced by outside pull request.
Fix crash introduced by pull request and my subsequent reliance on activity context. Use app context in threads, but continue to use activity context where it's needed.
Clean up some string concatenation.