fixes #4819: manual fix of missing .control-label in responsive767 file, coupled with a remake

docs/assets/css/bootstrap-responsive.css

@@ -876,7 +876,7 @@
   input[type="radio"] {
     border: 1px solid #ccc;
   }
-  .form-horizontal .control-group > label {
+  .form-horizontal .control-label {
     float: none;
     width: auto;
     padding-top: 0;

less/responsive-767px-max.less

@@ -132,25 +132,27 @@
   }
 
   // Remove the horizontal form styles
-  .form-horizontal .control-group > label {
+  .form-horizontal {
+    .control-label {
       float: none;
       width: auto;
       padding-top: 0;
       text-align: left;
     }
     // Move over all input controls and content
-  .form-horizontal .controls {
+    .controls {
       margin-left: 0;
     }
     // Move the options list down to align with labels
-  .form-horizontal .control-list {
+    .control-list {
       padding-top: 0; // has to be padding because margin collaspes
     }
     // Move over buttons in .form-actions to align with .controls
-  .form-horizontal .form-actions {
+    .form-actions {
       padding-left: 10px;
       padding-right: 10px;
     }
+  }
 
   // Modals
   .modal {