* Support custom backends defined as entry point
A custom backend may be needed to support a different database or
to extend or modify current backends functionality.
With this modification, a custom backend can be defined using an
entry point to provide its module location.
* Change entry point name for custom backends and include an example
* Fix oembed.
Use usual json (not jsonp request) with Access-Control-Allow-Origin header.
Correct path to oembed location.
* Move styling to embedding page from embedded to simplify configure.
Removed width/height from parameters.
Allow to hide title.
* More powerfull oembed.
Auto-renew.
Ability to open page locally (we heed to set http/https prefixes).
Fix loading: we need to set alerta defaults only after script loading.
* oembed example for grafana.
* Remove unused width/height from js.
* Ability to set empty background in case of no alerts.
* Oembed work fix.
qb.from_params forms incorrect arguments for query.
* Grafana load fix.
Grafana won't load script on "load". So it's better to embed js.
* Revert api path to usual environment prefix.
But leave a comment, how to use it with alerta, running in docker.
