Implement avinor job
Implement avinor widget
Prevent nginx from buffering /events response
Ensure that bindings are updated

When using EventSource events are triggered outside of Angulars control so
bindings might not be updated in all cases.
Include angular templates server-side

Improve performance (less requests) by including angular templates as raw text
when rendering jinja templates in Flask.
ping: Remove stray end tag
Trim whitespace in template blocks