Fix Gtk issues on Ubuntu 14.04

Fix #265

safeeyes/BreakScreen.py

@@ -173,9 +173,9 @@ class BreakScreen(object):
             toolbar = builder.get_object("toolbar")
 
             separator = Gtk.SeparatorToolItem()
-            toolbar.add(separator)
-            toolbar.child_set(separator, expand=True)
+            separator.set_expand(True)
             separator.show()
+            toolbar.add(separator)
 
             for tray_action in tray_actions:
                 toolbar_button = None

safeeyes/glade/break_screen.glade

@@ -187,7 +187,7 @@
           </packing>
         </child>
         <child>
-          <object class="GtkBox">
+          <object class="GtkBox" id="box_top_panel">
             <property name="visible">True</property>
             <property name="can_focus">False</property>
             <property name="orientation">vertical</property>

setup.py

@@ -5,6 +5,7 @@ import setuptools
 
 requires = [
     'babel',
+    'dbus-python',
     'psutil',
     'PyGObject',
     'python-xlib'