[Bugs] #3203 UNSP: Need to check Sugar for places where we might break on invalid data from the outside

[Sugar Labs Bugs]

#3203: Need to check Sugar for places where we might break on invalid data from
the outside
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    Reporter:  sascha_silbe               |          Owner:                             
        Type:  task                       |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar                      |        Version:  Git as of bugdate          
    Severity:  Major                      |       Keywords:                             
Distribution:                             |   Status_field:  New                        
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Comment(by sascha_silbe):

 Known places that need to be fixed:
 * Ring / Spiral View: no icon if activity icon is broken, no way to open
 palette
 * Journal list view: should show default icon instead of empty icon for
 instances of activities that have a broken icon (Palette works, though)

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Ticket URL: <http://bugs.sugarlabs.org/ticket/3203#comment:1>
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