don't use the old PaymentManager class
groundwork in OctreeEditPacketSender to handle escrow payments
add min required satoshis for payment account to OctreeEditPacketSender
add a method to hold packets destined for a node until payment is ready
add method for refill amount for octree payment account
emit payment required when account refill is required
add a queue for packets that require payment
add back voxel settings, handle payment required in EscrowPaymentManager
reset EditPacketBuffer to ensure that it is not double sent
add the EscrowPaymentManager that can create escrow payments via data-web
remove the escrow payment manager, handle payment creation in NodePaymentAccount
lazily lookup connection secret for node, add handler for escrow payment creation
rename method in NodePaymentAccount for clarity
dispatch escrow payment packets to associated node from NodePaymentAccount
don't require an associated node for NodePaymentAccount
move payments to networking, add NodePaymentAccount to node
link OpenSSL to network, not octree