Note managed by Simperium

Switches the Note to be completely managed by default Simperium stack. This
means any note stored in the current DB will be abandoned and left in the old
DB.

This works since Notes are treated as transient data. Using your own datastore
is something Simperium needs to handle better.
Integrating notes bucket with ListView
GCMIntentService should try to work with the bucket now
Remove unneeded networking and related code

Thanks Simperium