Bring the very last bits of js and css from spree_core

app/assets/javascripts/admin/spree/handlebar_extensions.js

@@ -0,0 +1,9 @@
+//= require handlebars
+Handlebars.registerHelper("t", function(key) {
+  if (Spree.translations[key]) {
+    return Spree.translations[key]
+  } else {
+    console.error("No translation found for " + key + ". Does it exist within spree/admin/shared/_translations.html.erb?")
+  }
+});
+

app/assets/javascripts/admin/spree/spree.js.coffee

@@ -0,0 +1,40 @@
+#= require jsuri
+class window.Spree
+  @ready: (callback) ->
+    jQuery(document).ready(callback)
+
+  # Helper function to take a URL and add query parameters to it
+  # Uses the JSUri library from here: https://code.google.com/p/jsuri/
+  # Thanks to Jake Moffat for the suggestion: https://twitter.com/jakeonrails/statuses/321776992221544449
+  @url: (uri, query) ->
+    if uri.path == undefined
+      uri = new Uri(uri)
+    if query
+      $.each query, (key, value) ->
+        uri.addQueryParam(key, value)
+    if Spree.api_key
+      uri.addQueryParam('token', Spree.api_key)
+    return uri
+
+  # Helper method in case people want to call uri rather than url
+  @uri: (uri, query) ->
+    url(uri, query)
+
+  # This function automatically appends the API token
+  # for the user to the end of any URL.
+  # Immediately after, this string is then passed to jQuery.ajax.
+  #
+  # ajax works in two ways in jQuery:
+  #
+  # $.ajax("url", {settings: 'go here'})
+  # or:
+  # $.ajax({url: "url", settings: 'go here'})
+  #
+  # This function will support both of these calls.
+  @ajax: (url_or_settings, settings) ->
+    if (typeof(url_or_settings) == "string")
+      $.ajax(Spree.url(url_or_settings).toString(), settings)
+    else
+      url = url_or_settings['url']
+      delete url_or_settings['url']
+      $.ajax(Spree.url(url).toString(), url_or_settings)