Adjust styles of autocomplete and search fields.

Input group needed some love and the jQuery UI helper was being shown.

www/less/map.less

@@ -85,10 +85,14 @@
 #mapSearch {
 	z-index: 1;
 	
-	input, button {
+	input {
 		font-size: 11px;
 		.box-shadow(0 2px 6px rgba(0,0,0,0.3));
 	}
+	
+	button {
+		font-size: 0.75em;
+	}
 }
 
 #mapProgress { 
@@ -275,6 +279,16 @@
 		}
 	}
 }
+.ui-helper-hidden-accessible {
+	border: 0;
+	clip: rect(0 0 0 0);
+	height: 1px;
+	margin: -1px;
+	overflow: hidden;
+	padding: 0;
+	position: absolute;
+	width: 1px;
+}
 
 #touch_control {
 	display: none;