[wp-trac] [WordPress Trac] #27708: Theme installer theme previewing fixes

[WordPress Trac]

#27708: Theme installer theme previewing fixes
--------------------------+-------------------
 Reporter:  nacin         |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  high          |  Milestone:  3.9
Component:  Themes        |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
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 1. theme-install.php?theme=twentyten route doesn't open the overlay. (High
 priority.)

  2. The "Preview" button should still show for already installed themes.
 (Low priority.)

 We can add minor things here as necessary. Bigger things should end up on
 their own ticket.

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Ticket URL: <https://core.trac.wordpress.org/ticket/27708>
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