Ask where to download files

user.js

 user_pref("devtools.editor.tabsize", 4); // indent size is 4 spaces
 user_pref("devtools.editor.expandtab", false); // indent with tabs
 
-/* Shutdown */
-// user_pref("privacy.sanitize.sanitizeOnShutdown", true); // clear data on shutdown
-// user_pref("privacy.clearOnShutdown.history", false); // save history
-// user_pref("privacy.clearOnShutdown.cache", false); // clear cache
-// user_pref("privacy.clearOnShutdown.downloads", true); // clear downloads
-// user_pref("privacy.clearOnShutdown.formdata", true); // clear form data
-// user_pref("privacy.clearOnShutdown.sessions", false);  // save sessions
-// user_pref("privacy.clearOnShutdown.cookies", false); // save cookies
-// user_pref("privacy.clearOnShutdown.offlineApps", true); // clear site data
-
 /* Content */
 user_pref("media.eme.enabled", true); // allow DRM
 user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true); // enable user styles
 user_pref("privacy.userContext.ui.enabled", true); // enable containers
 
 /* Downloads */
-// user_pref("browser.download.useDownloadDir", false); // always ask whether to open or save files
-// user_pref("browser.download.always_ask_before_handling_new_types", true); // confirm new file types
+user_pref("browser.download.useDownloadDir", false); // always ask where to save files
 user_pref("browser.download.alwaysOpenPanel", false); // disable automatically opening download panel
+user_pref("browser.download.autohideButton", true); // hide empty downloads button
 user_pref("browser.download.manager.addToRecentDocs", false); // disable adding downloads to recent documents
+
+/* PDFs */
 user_pref("browser.download.open_pdf_attachments_inline", true); // force PDFs to open in browser
 user_pref("pdfjs.disabled", false); // enable pdfjs
 user_pref("pdfjs.enableScripting", false); // disable scripts on pdfjs
 user_pref("breakpad.reportURL", "");
 user_pref("browser.tabs.crashReporting.sendReport", false);
 user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false);
+
+/* Shutdown */
+// user_pref("privacy.sanitize.sanitizeOnShutdown", true); // clear data on shutdown
+// user_pref("privacy.clearOnShutdown.history", false); // save history
+// user_pref("privacy.clearOnShutdown.cache", false); // clear cache
+// user_pref("privacy.clearOnShutdown.downloads", true); // clear downloads
+// user_pref("privacy.clearOnShutdown.formdata", true); // clear form data
+// user_pref("privacy.clearOnShutdown.sessions", false);  // save sessions
+// user_pref("privacy.clearOnShutdown.cookies", false); // save cookies
+// user_pref("privacy.clearOnShutdown.offlineApps", true); // clear site data