Cleanup .navbar-form styles

* Nuke the commented out navbar forms code that's not currently needed
* Add a few more examples to the .navbar-form docs section
* Remove (for now at least) top padding on checkbox and radios

less/navbar.less

@@ -336,36 +336,5 @@
   margin-top: 0; // then undo the margin here so we don't accidentally double it
 }
 
-// Navbar forms
-// -------------------------
-.navbar-form {
-  margin-bottom: 0; // remove default bottom margin
-  .clearfix();
-  input,
-  select,
-  .radio,
-  .checkbox {
-    .navbarVerticalAlign(30px); // Vertically center in navbar
-  }
-  input,
-  select,
-  .btn {
-    display: inline-block;
-    margin-bottom: 0;
-  }
-  input[type="image"],
-  input[type="checkbox"],
-  input[type="radio"] {
-    margin-top: 3px;
-  }
-  .input-append,
-  .input-prepend {
-    margin-top: 5px;
-    white-space: nowrap; // preven two  items from separating within a .navbar-form that has .pull-left
-    input {
-      margin-top: 0; // remove the margin on top since it's on the parent
-    }
-  }
-}
 
 */