fix site selector tests

plugins/CoreHome/angularjs/siteselector/siteselector.directive.less

@@ -121,7 +121,7 @@
   }
   .reset {
     position: absolute;
-    top: 4px;
+    top: 10px;
     right: 4px;
     cursor: pointer;
   }

tests/UI/specs/SiteSelector_spec.js

@@ -8,7 +8,7 @@
  */
 
 describe("SiteSelector", function () {
-    var selectorToCapture = '[piwik-siteselector],[piwik-siteselector] .custom_select';
+    var selectorToCapture = '[piwik-siteselector],[piwik-siteselector] .dropdown';
 
     this.timeout(0);