app.Facebook to app.facebookStore.
Add app.Frontpage, App was overloaded.
Refactor SEARCH_SONG to method.
Fix error shown twice in dev console.
app.errors.SilentError, app.errors.InnocuousError

ErrorReporter ignores silent error. Innocuous error is not reported to
server, but its message is still alerted.
Fix minor bug.
Refactor Facebook login via dispatcher actions.