visualfail: less duplicate HTML IDs

... and a lot less unneeded IDs, reducing the amount of data to be
transferred to the client.

Change-Id: I071920fd4d8039d2f3d1f5d8c41c2c3ddd639617

tools/analysis/VisualFAIL/css/myStyle.css

@@ -14,6 +14,10 @@ body {
   padding: 0 0 0 30px;
 }
 
+.sourcecode {
+  font-weight: bold;
+}
+
 #analyse {
   margin: 20px 0 0 0;
-}
+}