Revise require imports (#3071)

- order (external first)
- remove superfluous file extensions
- new line after imports
- deconstruct (only one time (in `check_config.js`))
- fix path (only one time (in `global-setup.js`))

tests/utils/weather_mocker.js

@@ -1,6 +1,6 @@
-const _ = require("lodash");
 const fs = require("fs");
 const path = require("path");
+const _ = require("lodash");
 
 /**
  * @param {string} type what data to read, can be "current" "forecast" or "hourly