add javascript translations, darken background and other confirm

app/assets/javascripts/user/application.js

@@ -26,6 +26,7 @@
 // require twitter/bootstrap/bootstrap-carousel
 //= require twitter/bootstrap/bootstrap-typeahead
 //= require twitter/bootstrap/bootstrap-affix
+//= require qwaiter
 //= require_directory .
 //= require_self
 var path_mapping = {
@@ -34,6 +35,12 @@ var path_mapping = {
   list_products_for_table: '/user/list_products_for_table',
   list_products: '/user/list_products'
 }
+var translations = {
+  confirmations: {
+    move_to_another_table_title: 'Move to another table?',
+    move_to_another_table: 'Are you sure you want to move to another table?'
+  }
+}
 function redirect_to(mapping, variables){
   variables || (variables = {});
   var vars = []
@@ -43,8 +50,19 @@ function redirect_to(mapping, variables){
   window.location = path_mapping[mapping] + '?' + vars.join('&')
 }
 function currency(num) {
-  if (isNaN(num) || num === '' || num === null) {
-    num = 0.0;
-  }
-  return '€ ' + parseFloat(num).toFixed(2);
+  return Qwaiter.currency(num);
+}
+String.prototype.capitalize = function() {
+    return this.charAt(0).toUpperCase() + this.slice(1);
+}
+function t(path){
+  var parts = path.split('.')
+  var accessor = 'translations["' + parts.join('"]["')+ '"]';
+  var result;
+  try{ 
+    result = eval(accessor);
+  } catch(err){ 
+    result = parts[parts.length - 1].capitalize();
+  }
+  return result;
 }