Configuration, Maps and User Management Fixes

A bundle of fixes across configuration, maps and user management from the last few weeks of support work.

What changed

• Sensor live view loads correctly again in the configuration overview (DoLynk streams).
• Map satellite background no longer disappears at high zoom levels.
• Timed camera masks keep the correct sorting order.
• Mask overlay colors render consistently in the viewer.
• Add-user action is disabled only when it genuinely cannot proceed, with clearer state.
• User listing in the roles modal shows the full, correct membership.
• Entity group can be selected while creating a customer, and device groups appear as a tree in site selection.