[OpenStreetMap] #2416: Make amf_controller.rb error messages translatable

[OpenStreetMap]

#2416: Make amf_controller.rb error messages translatable
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 Reporter:  avarab@…          |       Owner:  rails-dev@…                
     Type:  defect            |      Status:  new                        
 Priority:  major             |   Milestone:                             
Component:  website           |     Version:                             
 Keywords:  api_errors        |  
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Changes (by stevens):

  * keywords:  => api_errors


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Ticket URL: <https://trac.openstreetmap.org/ticket/2416#comment:2>
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