Request: Add setting to Dashboard device in Homey: hide controls, R/O

[mbobrovs]

Add settings to the dashboard device in Homey:

• hide controls for modifying the dashboard (like e.g. Edit widgets)
• hide menu of dashboard completely
• R/O mode: do not accept changes from the dashboard (e.g. turn on/off devices)
• disable opening extra popup when clicking on card

[skogsaas]

I really like this suggestion! It will allow non API-key users to have read only dashboards also 👍