Review eslint config (#3269)

- Remove "prettier" from plugin array, because it's already enabled by
"plugin:prettier/recommended"
- Remove "jsdoc" from plugin array, because it's already enabled by
"plugin:jsdoc/recommended"
- Enable recommended import rules
- Add two additional import rules

Note: To avoid overloading this PR I'll tackle the jest part with
another PR after this one has been dealt with.

modules/default/calendar/calendarfetcherutils.js

@@ -10,6 +10,7 @@
  */
 const path = require("path");
 const moment = require("moment");
+
 const zoneTable = require(path.join(__dirname, "windowsZones.json"));
 const Log = require("../../../js/logger");