[Bugs] #4283 sugar UNSP: Activity icons in neighborhood: palette error

[Sugar Labs Bugs]

#4283: Activity icons in neighborhood: palette error
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    Reporter:  manuq                      |          Owner:  manuq      
        Type:  defect                     |         Status:  new        
    Priority:  Unspecified by Maintainer  |      Milestone:  0.98       
   Component:  sugar                      |        Version:  Unspecified
    Severity:  Unspecified                |       Keywords:  regression 
Distribution:  Unspecified                |   Status_field:  Unconfirmed
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 TestCase:

 1. share an activity, like Memorize
 2. go to the neighborhood view, tap the activity icon

 Nothing happens.  This traceback appears in the shell log:

 {{{
 Traceback (most recent call last):
   File "/usr/lib/python2.7/site-packages/jarabe/desktop/meshbox.py", line
 93, in __button_release_event_cb
     self.props.palette.popup(immediate=True, state=Palette.SECONDARY)
 AttributeError: 'NoneType' object has no attribute 'popup'
 }}}

 Right click, left click and long press they all  pop up the palette.
 For other elements in the neighborhood, we inmediatly display the palette
 on tap.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/4283>
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