[OpenStreetMap] #4596: Add ltmgfy support to osqa-based help system

[OpenStreetMap]

#4596: Add ltmgfy support to osqa-based help system
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 Reporter:  SomeoneElse  |      Owner:  rails-dev@…
     Type:  enhancement  |     Status:  new
 Priority:  trivial      |  Milestone:
Component:  website      |    Version:
 Keywords:               |
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 The help.osm.org system works well, but there is a definite issue with
 repeat questions, like this one:

 https://help.openstreetmap.org/questions/16493/how-to-import-big-data

 Sometimes a bit of gentle teasing might be in order, along the lines of

 lmgtfy.com/?q=help

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Ticket URL: <https://trac.openstreetmap.org/ticket/4596>
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