Create Transaction Workflow

- [ ] "Create Transaction" is a button in nodeControls (in Controls.js)
When clicked, The button becomes disabled, and the simulation is paused.

- [ ] The simulation is dimmed (slightly greyed out), and a large bar shows up at the top of the screen that says "Select who you want to send the transaction to" (or an X button in top right to cancel transaction)

- [ ] Then a popup shows up saying "how much would you like to spend?" with a slider sort of option to select amount sent - anywhere from 0 to node.balance.

- [ ] At the bottom of the popup there is a checkmark that lets you select "sneaky mode" or "attempt overspend". If the checkmark is selected, there is no longer a cap on the amount you can select with the slider

-[ ] Optional: Then, there is a query - Do you wish to attempt to spend someone else's money? Then you can have another "Select who you want the transaction to be from"

-[ ] Then there's a button to "sign and send" that you just click

-[ ] Transaction is "generated" as an image in nodecontrols:
and animates into a node, then the transaction is sent out as colored circles as normal.