forum: reply page, CSS, and first_unread fix

core/static/core/style.css

@@ -247,10 +247,16 @@ tbody>tr:hover {
     background: darkgrey;
     width: 100%;
 }
+em {
+    font-style: italic;
+}
 .highlight {
     background: orange;
     font-weight: bold;
 }
+.underline {
+    text-decoration: underline;
+}
 .tool-bar {
     overflow: auto;
     padding: 4px;