refactor(app): clear all sessions for robot when disconnected, disable cal buttons

[b-cooper]

Overview

In order to prevent sessions from sticking around in redux state after a robot has disconnected,
purge all sessions that belong to the disconnected robot from redux state. All buttons on the
pipette info tab should be disabled with a tooltip if not connected to the robot, just as the
buttons on the robot page are.

Changelog

• add new client only sessions:CLEAR_ALL_SESSIONS action that purges the redux store of the sessions associated with the given robot
• new epic listens for robot:DISCONNECT_RESPONSE or robot:UNEXPECTED_DISCONNECT and dispatches new sessions:CLEAR_ALL_SESSIONS with the connected robot
• fix small unrelated jog controls layout inconsistency (1 liner) on the SaveZ component, the two controls should be justified center in the cal check

Review requests

• start a cal check session and the disconnect from wifi/usb, you should see the disconnect modal appear behind the session modal, and then the session modal should disappear. Upon reconnecting to the robot, the session modal should reappear where you left off.
• run cal check and make sure that the jog controls in the z checks are properly center justified

Risk assessment

low, this mostly shore's up edge cases, but is worth thoroughly testing

[sfoster1]

Test on my robot and app; looks good to me