Add concept waiter section

app/assets/javascripts/shared-ember-helpers/all.js.coffee

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+#= require_directory .

app/assets/javascripts/shared-ember-helpers/currency_helper.js.coffee

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+Ember.Handlebars.registerBoundHelper 'currency', (amount, params..., options)->
+  amount = 0.0 if isNaN(amount) || amount== '' || amount == null
+  new Handlebars.SafeString('€ ' + parseFloat(amount).toFixed(2))

app/assets/javascripts/shared-ember-helpers/translation.js.coffee

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+Ember.Handlebars.registerHelper 't', (path, params..., options)->
+  text = t(path)
+  tag = if options.hash.bare then text else "<span data-t=\"#{path}\">#{text}</span>"
+  new Handlebars.SafeString tag