add a loading bar (#159)

- when loading icons
- when downloading via QR
- when loading list in the browser
- when loading preview/BGM in the browser
- when downloading from the browser

source/camera.c

@@ -206,7 +206,7 @@ void update_qr(qr_data *data)
             draw_install(INSTALL_DOWNLOAD);
             char * zip_buf = NULL;
             char * filename = NULL;
-            u32 zip_size = http_get((char*)scan_data.payload, &filename, &zip_buf);
+            u32 zip_size = http_get((char*)scan_data.payload, &filename, &zip_buf, INSTALL_DOWNLOAD);
 
             if(zip_size != 0)
             {