Merge pull request #672 from angular-ui/fix-bootstrap-shadow

fix(bootstrap): reduce caret height to avoid wrong shadow

Author: dimirc

src/select.css

@@ -81,7 +81,7 @@
 
 .ui-select-bootstrap .ui-select-toggle > .caret {
   position: absolute;
-  height: 100%;
+  height: 10px;
   top: 50%;
   right: 10px;
   margin-top: -2px;