Fix CSS for geolocation button

Author: pedroha

stylesheets/food-compass.css

@@ -21,7 +21,7 @@ header {
 
 #geolocate-button {
   display: inline-block;
-  background-image: url("images/Geolocation-icon.png");
+  background-image: url("../images/Geolocation-icon.png");
   height: 35px;
   width: 35px;
   cursor: pointer;