.eslint updates

1. combine into single root level .eslint file
2. remove sort imports rule
3. change no-undef to warning to catch uses of global iD
4. use text descriptions "off","warn","error" instead of numeric codes

modules/.eslintrc

@@ -1,15 +0,0 @@
-{
-    "parserOptions": {
-        "ecmaVersion": 6,
-        "sourceType": "module"
-    },
-    extends: [
-        "plugin:import/errors"
-    ],
-    rules: {
-        "no-invalid-this": 0
-    },
-    globals: {
-        "iD": false,
-    }
-}