disable ssl in curl on android, implement interactive permission for android 23+

src/node_dialog_cloud.cpp

@@ -69,10 +69,14 @@ void NodeDialogCloud::load_thumbs_thread()
         curl_easy_setopt(curl, CURLOPT_WRITEDATA, &res);
         curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curl_data_handler);
         curl_easy_setopt(curl, CURLOPT_URL, "https://panopainter.com/cloud/cloud-list.php");
+#ifdef __ANDROID__
+        curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
+#endif
         auto err = curl_easy_perform(curl);
         
         if (err != CURLE_OK)
         {
+            LOG("connection error: %d", err);
             async_start();
             text->set_text("Could not connect to the server");
             async_update();