added array sorting and mapping on properties

test/standard_filter_test.rb

@@ -67,6 +67,13 @@ class StandardFiltersTest < Test::Unit::TestCase
   
   def test_sort
     assert_equal [1,2,3,4], @filters.sort([4,3,2,1])    
+    assert_equal [{"a" => 1}, {"a" => 2}, {"a" => 3}, {"a" => 4}], @filters.sort([{"a" => 4}, {"a" => 3}, {"a" => 1}, {"a" => 2}], "a")
+  end
+  
+  def test_map
+    assert_equal [1,2,3,4], @filters.map([{"a" => 1}, {"a" => 2}, {"a" => 3}, {"a" => 4}], 'a')
+    assert_template_result 'abc', "{{ ary | map:'foo' | map:'bar' }}",
+      'ary' => [{'foo' => {'bar' => 'a'}}, {'foo' => {'bar' => 'b'}}, {'foo' => {'bar' => 'c'}}]
   end
   
   def test_date