Merge with upstream repository

assets/css/gist.css

@@ -0,0 +1,6 @@
+body .gist .blob-num /* line numbers */,
+body .gist .blob-code-inner
+{
+    border: none;
+}
+

assets/css/main.css

@@ -253,7 +253,7 @@ blockquote {
 }
 
 table {
-  table-layout: fixed;
+  table-layout: auto;
   border-collapse: collapse;
   width: 100%;
   margin: 40px 0;

assets/css/style.css

@@ -15,3 +15,4 @@
 @import 'syntax.css';
 @import 'code.css';
 @import 'terms.css';
+@import 'gist.css';