Add styles for blockquotes.

Useful for quoting in comments.

template/resources/sass/viewport.scss

@@ -65,6 +65,9 @@
       td {
         color: #484848;
         padding: 2px 20px 2px 0; } }
+    blockquote {
+      padding-left: 1em;
+      border-left: solid 1em #e8e8e8; }
     pre.notpretty, pre.prettyprint {
       background-color: #f7f7f7;
       border: solid 1px #e8e8e8;