Infrastructure: Check vnu-jar warnings in addition to errors (pull #1671)

* Check for VNU warnings
* Turn off all current warnings in the config
* fix: remove "type" from style tags
* fix: role="main" on main element
* chore: Add tracking issues for validator warnings

Author: nschonni

.vnurc

@@ -12,3 +12,11 @@ Attribute “aria-posinset” not allowed on element “tr” at this point.
 Attribute “aria-setsize” not allowed on element “tr” at this point.
 # Ignoring role meter
 Bad value “meter” for attribute “role” on element “div”.
+# https://github.com/w3c/aria-practices/issues/1675
+The “type” attribute is unnecessary for JavaScript resources.
+# https://github.com/w3c/aria-practices/issues/1676
+The “row” role is unnecessary for element “tr”.
+# https://github.com/w3c/aria-practices/issues/1677
+Attribute “aria-activedescendant” value should either refer to a descendant element, or should be accompanied by attribute “aria-owns”.
+# https://github.com/w3c/aria-practices/issues/1678
+Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

examples/landmarks/form.html

@@ -8,7 +8,7 @@
     <link href="css/bootstrap-accessibility.css" rel="stylesheet" media="screen"/>
     <link href="css/visua11y.css" rel="stylesheet" media="screen"/>
     <link href="css/common.css" rel="stylesheet" media="screen"/>
-    <style type="text/css">
+    <style>
       label,
       input[type=submit] {
         display: block;

examples/radio/radio-activedescendant.html

@@ -24,7 +24,7 @@
         <li><a href="../../#radiobutton">Design Pattern</a></li>
       </ul>
     </nav>
-    <main role="main">
+    <main>
       <h1>Radio Group Example Using aria-activedescendant</h1>
       <p>
         This example implements the features of the <a href="../../#radiobutton">Radio Group Design Pattern</a>

examples/radio/radio.html

@@ -24,7 +24,7 @@
         <li><a href="../../#radiobutton">Design Pattern</a></li>
       </ul>
     </nav>
-    <main role="main">
+    <main>
       <h1>Radio Group Example Using Roving tabindex</h1>
       <p>
         This example implements the features of the <a href="../../#radiobutton">Radio Group Design Pattern</a>

package.json

@@ -19,7 +19,7 @@
     "regression": "ava --timeout=1m",
     "regression-report": "node test/util/report",
     "test": "npm run lint && npm run regression",
-    "vnu-jar": "java -jar node_modules/vnu-jar/build/dist/vnu.jar --errors-only --filterfile .vnurc --no-langdetect --skip-non-html aria-practices.html examples/",
+    "vnu-jar": "java -jar node_modules/vnu-jar/build/dist/vnu.jar --filterfile .vnurc --no-langdetect --skip-non-html aria-practices.html examples/",
     "create-gh-project": "node ./scripts/create-gh-project.js",
     "postinstall": "husky install",
     "prepublishOnly": "pinst --disable",