Moving the embed to it's own CSS file, moving the docs to the Components page with an example, fixing a Glyhpicons list problem in the docs

less/utilities.less

@@ -54,39 +54,3 @@
 .affix {
   position: fixed;
 }
-
-
-// Embeds responsive
-// -------------------------
-
-// Credit: Nicolas Gallagher
-
-.embed-responsive {
-  position: relative;
-  display: block;
-  height: 0;
-  padding: 0;
-  overflow: hidden;
-
-  .embed-responsive-item,
-  iframe,
-  embed,
-  object {
-    position: absolute;
-    top: 0;
-    left: 0;
-    bottom: 0;
-    height: 100%;
-    width: 100%;
-  }
-
-  // Modifier class for 16:9 aspect ratio
-  &.embed-responsive-16by9 {
-    padding-bottom: 56.25%;
-  }
-
-  // Modifier class for 4:3 aspect ratio
-  &.embed-responsive-4by3 {
-    padding-bottom: 75%;
-  }
-}