fix double padding issue on fluid layout and example

less/mixins.less

@@ -578,11 +578,11 @@
     .row-fluid {
       width: 100%;
       .clearfix();
-      > [class*="span"] {
+      [class*="span"] {
         float: left;
         margin-left: @fluidGridGutterWidth;
       }
-      > [class*="span"]:first-child {
+      [class*="span"]:first-child {
         margin-left: 0;
       }
 

less/responsive-767px-max.less

@@ -75,11 +75,16 @@
     padding-left: 20px;
     padding-right: 20px;
   }
+  // Negative indent the now static "fixed" navbar
   .navbar-fixed-top,
   .navbar-fixed-bottom {
     margin-left: -20px;
     margin-right: -20px;
   }
+  // Remove padding on container given explicit padding set on body
+  .container-fluid {
+    padding: 0;
+  }
 
   // GRID & CONTAINERS
   // -----------------