[pitivi] undo: Reenable undo/redo

[Alexandru Băluț <alexbalut src gnome org>]

commit 8df91b21d57a3e427e8d721dd545ceff52ff24d1
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Fri Jun 17 17:40:34 2016 +0200

    undo: Reenable undo/redo
    
    It's starting to be useful.

 pitivi/application.py |    5 +----
 pitivi/mainwindow.py  |    8 +++-----
 2 files changed, 4 insertions(+), 9 deletions(-)
---
diff --git a/pitivi/application.py b/pitivi/application.py
index 1a33f58..c887f82 100644
--- a/pitivi/application.py
+++ b/pitivi/application.py
@@ -27,7 +27,6 @@ from gi.repository import GObject
 from gi.repository import Gst
 from gi.repository import Gtk
 
-from pitivi.configure import in_devel
 from pitivi.configure import RELEASES_URL
 from pitivi.configure import VERSION
 from pitivi.dialogs.startupwizard import StartUpWizard
@@ -52,7 +51,7 @@ from pitivi.utils.timeline import Zoomable
 
 
 class Pitivi(Gtk.Application, Loggable):
-    """Pitivi's application.
+    """Hello world.
 
     Attributes:
         action_log (UndoableActionLog): The undo/redo log for the current project.
@@ -375,8 +374,6 @@ class Pitivi(Gtk.Application, Loggable):
 
     def _syncDoUndo(self):
         can_undo = self.action_log and bool(self.action_log.undo_stacks)
-        # TODO: Remove this once we revisit undo/redo T3360
-        can_undo = can_undo and in_devel()
         self.undo_action.set_enabled(bool(can_undo))
 
         can_redo = self.action_log and bool(self.action_log.redo_stacks)
diff --git a/pitivi/mainwindow.py b/pitivi/mainwindow.py
index ac9e2eb..c1bf51b 100644
--- a/pitivi/mainwindow.py
+++ b/pitivi/mainwindow.py
@@ -437,11 +437,9 @@ class MainWindow(Gtk.ApplicationWindow, Loggable):
         self.render_button.set_sensitive(False)  # The only one we have to set.
         self.render_button.connect("clicked", self._renderCb)
 
-        # TODO: Add these back once we revisit undo/redo T3360
-        if in_devel():
-            self._headerbar.pack_start(undo_button)
-            self._headerbar.pack_start(redo_button)
-            self._headerbar.pack_start(separator)
+        self._headerbar.pack_start(undo_button)
+        self._headerbar.pack_start(redo_button)
+        self._headerbar.pack_start(separator)
         self._headerbar.pack_start(self.save_button)
         self._headerbar.pack_start(self.render_button)