settings_manager is still untested, but much refined.
settings_manager is still untested, but much refined.

settings_manager.getsetter.secure(): Register the right deferred object
methods for keychain success and fail callbacks!

settings_manager.get(), .set(): Return the promise object.

settings_manager: provide the means to associate a pretty value with
respective settings values, and to fetch the pretty values given a specific
settings value.

SpiderOak/so_client_html5,SpiderOak/so_client_html5