OpenLayers click events don't work on ipad/iphone/ios/android

[craiggoldstone]

OpenLayers touch gestures conflict with the Angular Material mdGesture, causing click/tap on markers/popups to break. Looks like it's a problem others encountered angular/material#2365

Current workaround is:

.config(function($mdGestureProvider) {
  $mdGestureProvider.skipClickHijack();
});