title: Rails 4 Bootstrap 3 glyphicon display square under production
body: <p>I use bootstrap-sass to display glyphicons, it works well at localhost under development, but after i deploy it to a server use production, it display as a little square.
  I have already search for answers, they just tell me to  precompile something. But they didn't work.
  This is my production.rb</p>
  
  <pre><code>OperationBackend::Application.configure do
    config.cache_classes = true
    config.eager_load = true
    config.consider_all_requests_local       = false
    config.action_controller.perform_caching = true
    config.serve_static_assets = false
    config.assets.js_compressor = :uglifier
    config.assets.compile = false
    config.assets.digest = true
    config.log_level = :info
    config.i18n.fallbacks = true
    config.active_support.deprecation = :notify
    config.assets.precompile += ["*.woff", "*.eov", "*.svg", "*.ttf"]
  
    config.log_formatter = ::Logger::Formatter.new
    config.active_record.dump_schema_after_migration = false
    Paperclip.options[:command_path] = "/usr/local/bin"
  end
  </code></pre>
  
  <p>I also try make config.assets.complie = true 
  and do RAILS_ENV=production rake asset:precompile but they all didn't work</p>
  
  <p>This problem torture me hours! Wish to got help from you guys!</p>