[Bugs] #3136 UNSP: Restore should extract into Journal

[Sugar Labs Bugs]

#3136: Restore should extract into Journal
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    Reporter:  reuben                     |          Owner:  sascha_silbe               
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  Restore                    |        Version:  Unspecified                
    Severity:  Unspecified                |       Keywords:                             
Distribution:  Unspecified                |   Status_field:  Unconfirmed                
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 Restore currently copies the the backup into the Journal and then restores
 from that file. The backup file itself can be large and on resource
 constrained devices, XO-1, can fill the Journal prior to restore. Restore
 should directly extract from the USB drive rather then first copying the
 backup file into the Journal.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/3136>
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