Add functionallity allowing to recover from too high hardware utilization setting

[MichaelBuessemeyer]

The newly added hardware utilization modes are awesome, but the setting is saved across devices. Therefore, when switching the client device the previously set high hardware utilization might be too high for the device making wk crash.

Detailed Description

Let's develop a feature that allows the user to recover from such a WebGL context loss error, by adding e.g. a button to the error toast that auto reduces the hardware utilization and then reloads wk. Other user interactions could be implemented as well. The toast interaction was just my initial idea.

Context

• Specific to long-running jobs (set jobsEnabled=true in application.conf)
• Specific to webknossos.org (set isDemoInstance=true in application.conf)

• See eg. this bug report: https://discuss.webknossos.org/t/gpu-error-on-ipad/1864/6