new: Add warning when a node has mixed content.

Pipfile.lock

@@ -247,7 +247,7 @@
         "har2tree": {
             "editable": true,
             "git": "https://github.com/viper-framework/har2tree.git",
-            "ref": "8f0858a233b78e6050136ca1ad9feb4185c81696"
+            "ref": "729511265f7d58cb0aa9c8d4f0e6cc286cfbb87e"
         },
         "hyperlink": {
             "hashes": [

website/web/static/tree.js

@@ -439,9 +439,19 @@ function update(root, computed_node_width=0) {
               .attr('x', 12)
               .attr('y', 0)
               .style("opacity", "0.5")
-              .attr("stroke", "black")
+              .attr("stroke", d => {
+                  if (d.data.mixed_content){
+                      return "red";
+                  }
+                  return "black";
+              })
               .attr('stroke-opacity', "0.8")
-              .attr("stroke-width", "2")
+              .attr("stroke-width", d => {
+                  if (d.data.mixed_content){
+                      return "4";
+                  }
+                  return "2";
+              })
               .attr("stroke-linecap", "round")
               .attr("fill", "white");