Fixes #5912: User correct selector for form field states.

Previously, we were using a generic label selector, but as this was changed in the main forms awhile back, we need to change it here.

docs/assets/css/bootstrap.css

@@ -1432,7 +1432,7 @@ input[type="checkbox"][readonly] {
   background-color: transparent;
 }
 
-.control-group.warning > label,
+.control-group.warning .control-label,
 .control-group.warning .help-block,
 .control-group.warning .help-inline {
   color: #c09853;
@@ -1471,7 +1471,7 @@ input[type="checkbox"][readonly] {
   border-color: #c09853;
 }
 
-.control-group.error > label,
+.control-group.error .control-label,
 .control-group.error .help-block,
 .control-group.error .help-inline {
   color: #b94a48;
@@ -1510,7 +1510,7 @@ input[type="checkbox"][readonly] {
   border-color: #b94a48;
 }
 
-.control-group.success > label,
+.control-group.success .control-label,
 .control-group.success .help-block,
 .control-group.success .help-inline {
   color: #468847;
@@ -1549,7 +1549,7 @@ input[type="checkbox"][readonly] {
   border-color: #468847;
 }
 
-.control-group.info > label,
+.control-group.info .control-label,
 .control-group.info .help-block,
 .control-group.info .help-inline {
   color: #3a87ad;

less/mixins.less

@@ -163,7 +163,7 @@
 // Mixin for form field states
 .formFieldState(@textColor: #555, @borderColor: #ccc, @backgroundColor: #f5f5f5) {
   // Set the text color
-  > label,
+  .control-label,
   .help-block,
   .help-inline {
     color: @textColor;