Add a reminder for <button> without a type attribute

Author: dtdesign

com.woltlab.wcf/templates/headIncludeJavaScript.tpl

@@ -117,6 +117,18 @@ window.addEventListener('pageshow', function(event) {
 <script data-relocate="true">
 	require(["WoltLabSuite/Core/Devtools/Style/LiveReload"], (LiveReload) => LiveReload.watch());
 </script>
+<style type="text/css">
+button:not([type]) {
+	border: 5px solid red !important;
+
+	&::before {
+		background-color: #fff !important;
+		color: red !important;
+		content: "BUTTON_WITHOUT_TYPE";
+		font-weight: 600;
+	}
+}
+</style>
 {/if}
 
 <script data-relocate="true">