refactor app directory structure and add tests

tests/firefox/browser/chrome.manifest

@@ -0,0 +1 @@
+manifest components/components.manifest

tests/firefox/browser/components/components.manifest

@@ -0,0 +1 @@
+binary-component libbrowsercomps.so

tests/firefox/browser/crashreporter-override.ini

@@ -0,0 +1,8 @@
+; 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/.
+; This file is in the UTF-8 encoding
+[Strings]
+; LOCALIZATION NOTE (CrashReporterProductErrorText2): The %s is replaced with a string containing detailed information.
+CrashReporterProductErrorText2=Firefox had a problem and crashed. We'll try to restore your tabs and windows when it restarts.\n\nUnfortunately the crash reporter is unable to submit a crash report.\n\nDetails: %s
+CrashReporterDescriptionText2=Firefox had a problem and crashed. We'll try to restore your tabs and windows when it restarts.\n\nTo help us diagnose and fix the problem, you can send us a crash report.