message: Better styling of disabled buttons. Keep box shadow around them. Less contrast. Fix margins for button groups.
diff: @@ -1302,9 +1302,7 @@ select[multiple].input-lg,
  fieldset[disabled] .btn {
  cursor: not-allowed;
  opacity: 0.65;
  - filter: alpha(opacity=65);
  - -webkit-box-shadow: none;
  - box-shadow: none; }
  + filter: alpha(opacity=65); }
  a.btn.disabled,
  fieldset[disabled] a.btn {
  @@ -1341,7 +1339,7 @@ fieldset[disabled] a.btn {
  fieldset[disabled] .btn-default:hover,
  fieldset[disabled] .btn-default:focus,
  fieldset[disabled] .btn-default.focus {
  - background-color: #fff;
  + background-color: #eee;
  border-color: #ccc; }
  .btn-primary {
  @@ -1737,7 +1735,7 @@ tbody.collapse.in {
  .btn-group .btn + .btn-group,
  .btn-group .btn-group + .btn,
  .btn-group .btn-group + .btn-group {
  - margin-left: -1px; }
  + margin-left: 0px; }
  .btn-toolbar {
  margin-left: -5px; }
  