Adding 5 second delay before stopping fip and remove extra pop up

[micahwoodard]

Pull Request instructions:

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Describe changes:

• Stops redundant stop popup and delays fip on automatic stop

  What issues or discussions does this update address?

• resolves issues mentioned in #805

  Describe the expected change in behavior from the perspective of the experimenter

• if automatic stop is triggered, fip will stop after 5 seconds and session will go through stopping logic

  Describe any manual update steps for task computers

• None

  Was this update tested in 446/447?

• [ ] 446/7

[micahwoodard]

I'm deleting this for a new branch. I don't think I actually need to call _Start to implement the stopping logic so I'm just going to add a 5 second delay to stopping fib