grafana 7.2 - json data editor size

[PhilippHeuer]

The code editor for the json is really small on grafana 7.2.0:

This is caused by this line, where the size of the editor is set to 500px:
https://github.com/simPod/grafana-json-datasource/blob/master/src/QueryEditor.tsx#L89

[pete312]

I have done this too on the static plugin content awaiting a fix. It would be good if that editor box was auto sizing.