Merge branch 'master' into develop-0.10.0

components/common/openAnimation.js

-import velocity from 'velocity-animate';
+let velocity;
+if (typeof document !== 'undefined' && typeof window !== 'undefined') {
+  velocity = require('velocity-animate');
+}
 
 function animate(node, show, transitionName, done) {
   let ok;
@@ -37,4 +40,4 @@ const animation = {
   },
 };
 
-export default animation;
+module.exports = animation;

style/components/popover.less

@@ -125,7 +125,7 @@
   &-message {
     padding: 8px 0 16px;
     font-size: 12px;
-    color: text-color;
+    color: @text-color;
     .anticon {
       margin-right: 8px;
       color: @error-color;