[Buildbot] #3400: md_base log viewer needs improvment

[Buildbot trac]

#3400: md_base log viewer needs improvment
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Reporter:  tardyp       |      Owner:
    Type:  enhancement  |     Status:  new
Priority:  major        |  Milestone:  0.9.+
 Version:  master       |   Keywords:  md_base
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 - Needs to parse the header of each line (and color it)
 - Needs to support lazy loading for bug logs

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Ticket URL: <http://trac.buildbot.net/ticket/3400>
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Buildbot: build/test automation