[Bugs] #1108 UNSP: PEP8 compliance fixes

[SugarLabs Bugs]

#1108: PEP8 compliance fixes
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    Reporter:  sascha_silbe               |          Owner:  tomeu                      
        Type:  task                       |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar-datastore            |        Version:  Git as of bugdate          
    Severity:  Trivial                    |       Keywords:                             
Distribution:  Unspecified                |   Status_field:  New                        
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 The attached patch fixes most of the complains from pep8.py (from
 browsershots.org - used the Google copy as the site seems to be
 malfunctioning). This makes it easier to find my own mistakes (required
 for patch submission). :)

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Ticket URL: <http://dev.sugarlabs.org/ticket/1108>
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