Revert "Remove WebIDE devtools component."

This reverts commit 8c1500707f.

# Conflicts:
#	application/basilisk/components/customizableui/CustomizableUI.jsm

devtools/client/webide/modules/moz.build

@@ -0,0 +1,21 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+DevToolsModules(
+    'addons.js',
+    'app-manager.js',
+    'app-projects.js',
+    'app-validator.js',
+    'build.js',
+    'config-view.js',
+    'project-list.js',
+    'runtime-list.js',
+    'runtimes.js',
+    'simulator-process.js',
+    'simulators.js',
+    'tab-store.js',
+    'utils.js'
+)