fixup! Add TorStrings module for localization

Bug 42203: Migrate about dialog strings to Fluent.

browser/base/content/browser-doctype.inc

@@ -2,5 +2,3 @@
 %brandDTD;
 <!ENTITY % torbuttonDTD SYSTEM "chrome://torbutton/locale/torbutton.dtd">
 %torbuttonDTD;
-<!ENTITY % aboutDialogDTD SYSTEM "chrome://torbutton/locale/aboutDialog.dtd">
-%aboutDialogDTD;

toolkit/torbutton/chrome/locale/en-US/aboutDialog.dtd

-<!-- Copyright (c) 2022, The Tor Project, Inc.
-   - This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<!ENTITY project.start           "&brandShortName; is developed by ">
-<!-- LOCALIZATION NOTE (project.tpoLink): This is a link title that links to https://www.torproject.org -->
-<!ENTITY project.tpoLink         "the &vendorShortName;">
-<!ENTITY project.end             ", a nonprofit working to defend your privacy and freedom online.">
-
-<!ENTITY help.start              "Want to help? ">
-<!-- LOCALIZATION NOTE (help.donate): This is a link title that links to https://donate.torproject.org/ -->
-<!ENTITY help.donateLink         "Donate">
-<!ENTITY help.or                 " or ">
-<!-- LOCALIZATION NOTE (help.getInvolvedLink): This is a link title that links to https://community.torproject.org/ -->
-<!ENTITY help.getInvolvedLink    "get involved">
-<!ENTITY help.end                "!">
-<!-- LOCALIZATION NOTE (bottom.questions): This is a link title that links to https://support.torproject.org/ -->
-<!ENTITY bottomLinks.questions   "Questions?">
-<!-- LOCALIZATION NOTE (bottom.questions): This is a link title that links to https://community.torproject.org/relay/ -->
-<!ENTITY bottomLinks.grow        "Help the Tor Network Grow!">
-<!-- LOCALIZATION NOTE (bottom.questions): This is a link title that links to about:license -->
-<!ENTITY bottomLinks.license  "Licensing Information">
-<!ENTITY tor.TrademarkStatement   "'Tor' and the 'Onion Logo' are registered trademarks of the Tor Project, Inc.">