Personal nodes

[rachelhamlin]

1. Research
2. Decide on viability
3. If viable, write specs
4. Implement

status-im/swarms#28

Goals:

at first a private node would allow a user to reduce bandwidth consumption (from messages and wallet) to a minimum on his phone
for iOS it means he could also set up notifications.
that would mean a much lightweight version of status running on the phone, and much more independence from status infra for little cost
later on there is other kind of nodes that would be developed which would support public requests such a wallet history or ipfs/swarm content.
nodes could be paid for services/responses using the raiden network, snt transfers would be almost instant and free which would also allow for features like snt reactions and tribute to talk to exist