Update world_go.png to 32x32, also suitable for retina

edit.html

@@ -93,6 +93,12 @@
 			#url:not([href^="http"]) {
 				display: none;
 			}
+			img[src*="world"] {
+				width: 16px;
+				height: 16px;
+				vertical-align: middle;
+				image-rendering: -webkit-optimize-contrast;
+			}
 			#enabled {
 				margin-left: 0;
 				vertical-align: middle;

manage.html

@@ -43,6 +43,12 @@
 				width: 100%; height: 2px;
 				background-color: #fff;
 			}
+			img[src*="world"] {
+				width: 16px;
+				height: 16px;
+				vertical-align: middle;
+				image-rendering: -webkit-optimize-contrast;
+			}
 			.applies-to {
 				word-break: break-word;
 			}