update bootstrap to 2.0.3

single commit this time

css/less/close.less

@@ -12,7 +12,18 @@
   &:hover {
     color: @black;
     text-decoration: none;
-    .opacity(40);
     cursor: pointer;
+    .opacity(40);
   }
 }
+
+// Additional properties for button version
+// iOS requires the button element instead of an anchor tag.
+// If you want the anchor version, it requires `href="#"`.
+button.close {
+  padding: 0;
+  cursor: pointer;
+  background: transparent;
+  border: 0;
+  -webkit-appearance: none;
+}