Ability to sell all coins in balance

[jvandenaardweg]

I think it might be handy to have a feature to sell all (or a portion) of your coins all at once. For example, when the market is crashing down and you want to secure profits before it's too late.

Below is a use case how I think it should work:

Use case:

1. User panics and wants to sell his coins to secure already made profits quickly
2. User clicks [Sell all coins] on the balance page
3. System opens a "sell coins" page
4. User has the ability to set a price per coin (or an easy quick option to sell all below/above current market price)
5. User clicks [Place orders]
6. System will cancel all open orders for that user
7. System will place a new sell order for each coin
8. User can track the progress of those orders on the /orders page
9. User is happy when orders fill

Would love to get some input on this :)