Use js for the config file

Lest we spend an eternity being scalded about dangling commas

.stylelintrc.js

@@ -0,0 +1,7 @@
+module.exports = {
+    "extends": "stylelint-config-standard",
+    "rules": {
+        "indentation": 4,
+        "comment-empty-line-before": "off",
+    }
+}

.stylelintrc.json

@@ -1,6 +0,0 @@
-{
-    "extends": "stylelint-config-standard",
-    "rules": {
-        "indentation": 4
-    }
-}