[Buildbot] #3175: About page should be customizable

[Buildbot trac]

#3175: About page should be customizable
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Reporter:  tardyp  |      Owner:
    Type:  task    |     Status:  new
Priority:  major   |  Milestone:  undecided
 Version:  0.8.10  |   Keywords:  web, simple
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 It should be easy to add version info customization for about page

 - version of the master.cfg, and its python dependancies
 - name of the project
 - url of the project

 => 'www' config dictionary should take a 'versions' argument that has
 key="<component name>" value="<version>"
 => versions are mixed in with python, twisted, and buildbot version,
 automatically found by core
 => versions, name, and url are transmitted via config to the UI, and
 displayed in about page

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Ticket URL: <http://trac.buildbot.net/ticket/3175>
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Buildbot: build/test automation