[wp-gsoc] [Summer of Code] #327: Convert current WP_Import tasks for statefulness

[Summer of Code]

#327: Convert current WP_Import tasks for statefulness
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 Reporter:  frederick.ding           |       Owner:
     Type:  enhancement              |      Status:  new
 Priority:  normal                   |   Milestone:  2013 Midterm (Beta)
Component:  Migration & Portability  |  Resolution:
 Keywords:  needs-unit-tests         |
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Comment (by frederick.ding):

 In [changeset:"2157"]:
 {{{
 #!CommitTicketReference repository="" revision="2157"
 Port category processing to cron; see #327 and #331

 - Directly outputted messages now in WP_Error objects as warnings
 }}}

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Ticket URL: </ticket/327#comment:6>
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