Prepare for callbacks that return more than one menu This paves the way for callbacks that dynamically construct their menu based on in-db content, such as Programs and Documents. Patch by: Sverre Rabbelier

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−# Directions for web crawlers.
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−# See http://www.robotstxt.org/wc/norobots.html.
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−
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−User-agent: HTTrack
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−User-agent: puf
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−User-agent: MSIECrawler
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−User-agent: Nutch
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−Disallow: /