increase timeout for theme loaded check (working on #98)

src/greeter.c

@@ -478,7 +478,7 @@ main(int argc, char **argv) {
 	g_signal_connect(WEBKIT_WEB_VIEW(web_view), "context-menu", G_CALLBACK(context_menu_cb), NULL);
 
 	/* Register callback to check if theme loaded successfully */
-	g_timeout_add_seconds(5, (GSourceFunc) maybe_show_theme_fallback_dialog, NULL);
+	g_timeout_add_seconds(10, (GSourceFunc) maybe_show_theme_fallback_dialog, NULL);
 
 	/* There's no turning back now, let's go! */
 	gtk_container_add(GTK_CONTAINER(window), web_view);