Improvements and fixes

A ticket can now be raised on a battery container, rack, module or cell, and measurement exports and calendars reach back to 2020.

• A ticket can now be raised on a battery container, rack, module or cell, and those tables show its open tickets.
• Measurement exports now reach back to 2020, and every calendar has a year dropdown for picking an older day.
• A site router that connects over IPsec without naming the identity it expects from Mirox is authenticated again instead of being refused.
• A wind plant now has the same step-by-step setup page as a solar plant.