Add reseal button to multipatch module

[campagnola]

Scientifica's new motion cards have a very low minimum speed, so we should be able to automate pipette resealing.

• Add a "reseal' / "pull off" / "outside-out" button to multipatch module
• Add a config option to set the speed for pulling off
• Another option to set the distance? Can we just hardcode this at 200 um or so?

[scseeman]

Re Seal added