Make ordinal in duplication statement friendlier.

cms/djangoapps/contentstore/features/component.feature

@@ -106,7 +106,7 @@ Feature: CMS.Component Adding
         Given I am in Studio editing a new unit
         And I add a "Blank Common Problem" "Problem" component
         And I add a "Multiple Choice" "Problem" component
-        And I duplicate the "0" component
+        And I duplicate the first component
         Then I see a Problem component with display name "Duplicate of 'Blank Common Problem'" in position "1"
         And I reload the page
         Then I see a Problem component with display name "Blank Common Problem" in position "0"

cms/djangoapps/contentstore/features/component.py

@@ -134,8 +134,14 @@ def edit_and_save_component(step):
     world.css_click('.save-button')
 
 
-@step(u'I duplicate the "([^"]*)" component$')
-def duplicated_component(step, index):
+@step(u'I duplicate the (first|second|third) component$')
+def duplicated_component(step, ordinal):
+    ord_map = {
+        "first": 0,
+        "second": 1,
+        "third": 2,
+    }
+    index = ord_map[ordinal]
     duplicate_btn_css = 'a.duplicate-button'
     world.css_click(duplicate_btn_css, int(index))