[Buildbot] #3264: pending buildrequests are displayed twice in the buider page

[Buildbot trac]

#3264: pending buildrequests are displayed twice in the buider page
-------------------+---------------------
Reporter:  Ben     |      Owner:
    Type:  defect  |     Status:  new
Priority:  minor   |  Milestone:  0.9.0b1
 Version:  master  |   Keywords:  web
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 When a builder has pending build requests, each pending request is
 displayed twice (same id in two rows). As the builder processes the
 requests, only one of them is removed from the list (leaving processed
 build requests in the list). When refreshing the page, all processed build
 requests disappear.

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Ticket URL: <http://trac.buildbot.net/ticket/3264>
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Buildbot: build/test automation