Fix dangling table elements

app/src/main/java/eu/faircode/email/HtmlHelper.java

@@ -837,8 +837,8 @@ public class HtmlHelper {
                 for (Element child : table.children()) {
                     switch (child.tagName()) {
                         case "thead":
-                        case "tfoot":
                         case "tbody":
+                        case "tfoot":
                             for (Element sub : child.children())
                                 if ("tr".equals(sub.tagName())) {
                                     rows.add(sub);
@@ -1017,6 +1017,9 @@ public class HtmlHelper {
                 }
             }
 
+        // Fix dangling table elements
+        document.select("tbody,thead,tfoot,tr,th,td").tagName("div");
+
         // Images
         // https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img
         for (Element img : document.select("img")) {