switched h1 to h2 for posts, removed unnecesary css classes, check if author exists

_sass/_layout.scss

@@ -80,6 +80,10 @@ a, .navbar-default .navbar-nav li a, .navbar-nav > li > a {
   }
 }
 
+.singlepost {
+  margin-top:60px;
+}
+
 .footer {
   padding: 20px;
   ul {