[Bugs] #3180 UNSP: GetBooks needs to report when it cannot contact a server

[Sugar Labs Bugs]

#3180: GetBooks needs to report when it cannot contact a server
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    Reporter:  greenfeld                  |          Owner:  godiard    
        Type:  defect                     |         Status:  new        
    Priority:  Unspecified by Maintainer  |      Milestone:  0.94       
   Component:  GetBooks                   |        Version:  0.94.x     
    Severity:  Unspecified                |       Keywords:             
Distribution:  OLPC                       |   Status_field:  Unconfirmed
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 1. Start GetBooks on an XO which is not connected to any network (it can
 be in ad-hoc or Mesh mode).
  2. Click on one of the "Catalog" choices in the sidebar.
  3. You will be told "Sorry, no books could be found" in the status bar,
 which is almost meaningless.  We should at least say we could not connect
 to the server although I do not know what kind of "server" we should say
 it is to keep terms simple ("book server", "catalog server", etc.).

 The ideal situation would be for Sugar itself to query a host and figure
 out if we are online, isolated, behind a redirect firewall, etc., but that
 is a more complex implementation case.

 Seen in 11.3.0 os880/GetBooks-10.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/3180>
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