Merge pull request #8455 from cvrebert/control-group-dead

rm .control-group from docs since it's no longer in the LESS

docs/css.html

@@ -1456,19 +1456,19 @@ For example, <code>&lt;section&gt;</code> should be wrapped as inline.
     <p>Validation styles are applied on a per-input basis. With horizontal forms, the <code>&lt;label class="control-label"&gt;</code> will always be styled.</p>
 
     <form class="bs-example form-horizontal">
-      <div class="control-group has-warning">
+      <div class="has-warning">
         <label class="control-label" for="inputWarning">Input with warning</label>
         <div class="controls">
           <input type="text" class="input-with-feedback" id="inputWarning">
         </div>
       </div>
-      <div class="control-group has-error">
+      <div class="has-error">
         <label class="control-label" for="inputError">Input with error</label>
         <div class="controls">
           <input type="text" class="input-with-feedback" id="inputError">
         </div>
       </div>
-      <div class="control-group has-success">
+      <div class="has-success">
         <label class="control-label" for="inputSuccess">Input with success</label>
         <div class="controls">
           <input type="text" class="input-with-feedback" id="inputSuccess">
@@ -1476,19 +1476,19 @@ For example, <code>&lt;section&gt;</code> should be wrapped as inline.
       </div>
     </form>
 {% highlight html %}
-<div class="control-group has-warning">
+<div class="has-warning">
   <label class="control-label" for="inputWarning">Input with warning</label>
   <div class="controls">
     <input type="text" class="input-with-feedback" id="inputWarning">
   </div>
 </div>
-<div class="control-group has-error">
+<div class="has-error">
   <label class="control-label" for="inputError">Input with error</label>
   <div class="controls">
     <input type="text" class="input-with-feedback" id="inputError">
   </div>
 </div>
-<div class="control-group has-success">
+<div class="has-success">
   <label class="control-label" for="inputSuccess">Input with success</label>
   <div class="controls">
     <input type="text" class="input-with-feedback" id="inputSuccess">