Added dont't preload on mobile to preload function

assets/js/photo.js

@@ -46,7 +46,7 @@ photo = {
 			lychee.imageview.show();
 			setTimeout(function() {
 				lychee.content.show();
-				if (!mobileBrowser()) photo.preloadNext(photoID, albumID);
+				photo.preloadNext(photoID, albumID);
 			}, 300);
 
 		});
@@ -59,6 +59,10 @@ photo = {
 		var nextPhoto,
 			url;
 
+		// Never preload on mobile devices with bare RAM and
+		// mostly mobile internet
+		if (!mobileBrowser()) return false;
+
 		if (album.json &&
 		   album.json.content &&
 		   album.json.content[photoID] &&