Toggle GlobalLog from Dashboard

[Darth-Raazi]

When running tests, we capture all our data for post-processing using a sink called globallog. Unfortunately, it's easy to forget to start it during tests, in which case we lose all the data. To solve this we want to:

• Add a button to the Omnibus dashboard that can toggle (start/stop) globallog
• Add a popup that asks the user to confirm starting (or stopping) when the button is pressed
• Add a popup when the dashboard is locked that reminds the user to start globallog if this is a real test