- Linting (ESLint): Lint per latest ash-nazg (e.g., named capture)

- Linting (ESLint): Add HTML files to linting and add devDeps for new ash-nazg
- npm: Update devDeps

test/contextmenu_test.html

@@ -7,9 +7,10 @@
   <link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css"/>
   <script src="../editor/jquery.min.js"></script>
   <script>
-  // Mock for browser.js
   window.svgEditor = {
-      ready () {}
+    ready () {
+      // Mock for browser.js
+    }
   };
   </script>
   <script src="../node_modules/qunit/qunit/qunit.js"></script>