[MacPorts] #52835: Update trac.macports.org to Trac 1.2

[MacPorts]

#52835: Update trac.macports.org to Trac 1.2
---------------------+------------------------
  Reporter:  raimue  |      Owner:  neverpanic
      Type:  update  |     Status:  accepted
  Priority:  Normal  |  Milestone:
 Component:  trac    |    Version:  2.3.4
Resolution:          |   Keywords:
      Port:          |
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Comment (by neverpanic):

 We needed a maintenance page to redirect people to while we disable the
 trac virtualhost. I've created https://github.com/neverpanic/macports-www-
 maintenance/, which should work. See https://neverpanic.github.io
 /macports-www-maintenance/ for a rendered version.

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Ticket URL: <https://trac.macports.org/ticket/52835#comment:7>
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