Added call to retrieve status message and display result to UI.
Implemented wall image retrieval procedure and display to UI.
Fixed issues with cache creation/setup, and resolved issues with status message retrieval (added permission to manifest).
Formatted code overall, and added logging throughout.

TODO: Add/update java doc where applicable.
TODO: The status message being pulled is not what we want, but this is due to the PHP page returning a different message for mobile users.