JS-T: Transfer STEEM and SBD to savings balance

[feruzm]

Transfer STEEM and SBD to savings balance

AC

• Save STEEM and/or SBD
• Withdraw from savings
• Simple UI and hot signing (steemconnect)

[relativityboy]

This is a pretty uncommon need, and likely to become less common as time goes on. Let's see if there's a lot of community demand for it.