Enhance the usability of receiving and sending coinbase rewards.

[adilwali]

User should see differentiated content associated with receiving a coinbase reward versus a regular incoming transaction.

Further, because coinbase maturity is different than regular incomingTx maturity, we should more smoothly handle messaging this and managing the flow for the user.

Specifically, this should include:

• Different recent TX UI treatment.
• Different modals for inbound events.
• Different push notification content.
• Proactive tooltip to explain confirmations on coinbase.
• Detailed explanation of coinbase in total available balance modal.