[Bugs] #96 MAJO: lots of wakeups on neighborhood view

[SugarLabs Bugs]

#96: lots of wakeups on neighborhood view
-------------------+--------------------------------------------------------
Reporter:  dsd     |       Owner:  marcopg
    Type:  defect  |      Status:  new    
Priority:  major   |   Component:  sugar  
Keywords:  r?      |  
-------------------+--------------------------------------------------------
 When switching to the neighborhood view, sugar causes 10 wakeups per
 second *per visible AP or mesh network*, for no good reason as nothing on-
 screen is changing.

 * MeshBox.resume() calls "ap.props.paused" for each AP
 * This results in CanvasPulsingIcon.set_paused() being called, to unpause
 each AP pulsing icon
 * CanvasPulsingIcon.set_paused() unconditionally starts the pulse loop (10
 wakeups per second) even if there is nothing to be pulsed.

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Ticket URL: <http://dev.sugarlabs.org/ticket/96>
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