Darkens dropdown active color to make it more visible

src/modules/dropdown.less

@@ -210,7 +210,7 @@
 /* Menu Item Active */
 .ui.dropdown .menu .active.item {
   box-shadow: none;
-  background-color: rgba(0, 0, 0, 0.04);
+  background-color: rgba(0, 0, 0, 0.06) !important;
   border-left: none;
   border-color: transparent !important;
 
@@ -480,7 +480,7 @@
   z-index: 2;
 }
 
-.ui.pointing.dropdown .menu .item.active:first-child {
+.ui.pointing.dropdown .menu .active.item:first-child {
   background: transparent -webkit-linear-gradient(transparent, rgba(0, 0, 0, 0.03));
   background: transparent -moz-linear-gradient(transparent, rgba(0, 0, 0, 0.03));
   background: transparent -o-linear-gradient(transparent, rgba(0, 0, 0, 0.03));