[pitivi] timeline: Do not forget to set video transition to sensitive

[Thibault Saunier <tsaunier src gnome org>]

commit 967cdfb15cdda501a1253dce82d0fa39ac1b1ed6
Author: Thibault Saunier <tsaunier gnome org>
Date:   Thu May 14 19:23:42 2015 +0200

    timeline: Do not forget to set video transition to sensitive
    
    And raise their z_order as needed

 pitivi/timeline/elements.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/timeline/elements.py b/pitivi/timeline/elements.py
index 7966eac..05e26f7 100644
--- a/pitivi/timeline/elements.py
+++ b/pitivi/timeline/elements.py
@@ -840,6 +840,8 @@ class TransitionClip(Clip):
         super(TransitionClip, self)._childAdded(clip, child)
 
         if isinstance(child, GES.VideoTransition):
+            self.z_order = 1
+            self.set_sensitive(True)
             self.__has_video = True
             child.selected.connect("selected-changed", self._selectedChangedCb, child)