Layout: side titles adjustments

As discussed on #13, this goes back to the original layout, namely side
titles on large res, but aligns them to the left and gives enough spacing
to display the code snippets with large monospaced fonts (e.g Monaco,
Menlo).

Author: adrientetar

css/bootstrap.css

@@ -1005,7 +1005,7 @@ pre code {
     width: 75%;
   }
   .col-md-10 {
-    width: 83.33333333333334%;
+    width: 80%;
   }
   .col-md-11 {
     width: 91.66666666666666%;