Merge branch '3.0.0-wip' of https://github.com/twitter/bootstrap into 3.0.0-wip

diff --cc docs/assets/css/bootstrap.css
Simple merge

diff --cc less/labels.less
index 74018b1deed217e7e4053f2c566003637e7a0994,e01054fdf4b191e23bf674f803d4b55c7399cfbf..dbaff88642a0f20bb3a7e388a3bd4a5139765642
--- 1/less/labels.less
--- 2/less/labels.less
+++ b/less/labels.less
@@@ -14,85 -13,34 +14,85 @@@
    vertical-align: middle;
    white-space: nowrap;
    text-align: center;
-   background-color: @grayLight;
+   background-color: @gray-light;
    border-radius: .25em;
 -}
  
 -// Hover state, but only for links
 -a.label {
 -  &:hover,
 -  &:focus {
 -    color: #fff;
 -    text-decoration: none;
 -    cursor: pointer;
 +  // Hover state, but only for links - as a mixin which will be accessible as LESS shorthand: .label > .a;
 +  .a() {
 +    &:hover,
 +    &:focus {
 +      color: #fff;
 +      text-decoration: none;
 +      cursor: pointer;
 +    }
 +  }
 +
 +  // Colors
 +  // Only give background-color difference to links (and to simplify, we don't qualifty with `a` but [href] attribute)
 +  // If there is a need for [href] then use local mixin a() via ex: .label-danger > .a; to attach additional CSS for [href] attr
 +  
 +  .label-danger() {
 +    background-color: @label-danger-bg;
 +    .a() {
 +      &[href] {
 +       background-color: darken(@label-danger-bg, 10%);
 +      }
 +    }
 +  }
 +
 +  .label-warning() {
 +    background-color: @label-warning-bg;
 +    .a() {
 +      &[href] {
 +        background-color: darken(@label-warning-bg, 10%);
 +      }
 +    }
 +  }
 +
 +  .label-success() {
 +    background-color: @label-success-bg;
 +    .a() {
 +      &[href] {
 +        background-color: darken(@label-success-bg, 10%);
 +      }
 +    }
 +  }
 +
 +  .label-info() {
 +    background-color: @label-info-bg;
 +    .a() {
 +      &[href] {
 +        background-color: darken(@label-info-bg, 10%);
 +      }
 +    }
    }
  }
  
 -// Colors
 -// Only give background-color difference to links (and to simplify, we don't qualifty with `a` but [href] attribute)
 +// populate mixins for CSS
  .label {
 -  // Danger (red)
 -  &-danger            { background-color: @label-danger-bg; }
 -  &-danger[href]      { background-color: darken(@label-danger-bg, 10%); }
 -  // Warnings (orange)
 -  &-warning           { background-color: @label-warning-bg; }
 -  &-warning[href]     { background-color: darken(@label-warning-bg, 10%); }
 -  // Success (green)
 -  &-success           { background-color: @label-success-bg; }
 -  &-success[href]     { background-color: darken(@label-success-bg, 10%); }
 -  // Info (turquoise)
 -  &-info              { background-color: @label-info-bg; }
 -  &-info[href]        { background-color: darken(@label-info-bg, 10%); }
 +  .label();
 +}
 +
 +a.label {
 +  .label > .a;
 +}
 +
 +.label-danger {
 +  .label > .label-danger;
 +  .label > .label-danger > .a; // will produce .label-danger[href] class for folks who like to use class in HTML
 +}
 +
 +.label-warning {
 +  .label > .label-warning;
 +  .label > .label-warning > .a;
 +}
 +
 +.label-success {
 +  .label > .label-success;
 +  .label > .label-success > .a;
  }
  
- } 
 +.label-info {
 +  .label > .label-info;
 +  .label > .label-info > .a;
++}