[Bugs] #1152 UNSP: automate school server registration

[SugarLabs Bugs]

#1152: automate school server registration
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    Reporter:  dsd                        |          Owner:  tomeu                      
        Type:  enhancement                |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar                      |        Version:  Unspecified                
    Severity:  Unspecified                |       Keywords:                             
Distribution:  Unspecified                |   Status_field:  Unconfirmed                
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 Getting first time users to register is quite a challenge and this can be
 automated.

 Here are some hacks for sugar-0.82 to implement this, dependent on #1151.
 It is tricky because python doesn't offer asynchronous xmlrpc, and
 threading should also be avoided, so the approach I took is to run the
 registration as a subprocess which communicates back to sugar and the
 presence service using dbus.

 It runs on first sugar boot, on sugar boot when a network connection is
 already established, and every time that a network connection is
 established after boot. It is unconditional meaning that it will register
 to any server, including ones that it was already registered to, or ones
 that it has never seen before. this means that there are no issues when an
 XS gets reinstalled, or when the kid moves school, but it also means that
 someone could set up something to receive a copy of a kids files (because
 of the automatic backup system).

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Ticket URL: <http://dev.sugarlabs.org/ticket/1152>
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