added tests to check for solves for wiki bugs

lms/djangoapps/acceptance_testing/features/wiki-bugs.feature

+Feature: There are bugs on the wiki
+  In order to see if bugs are fixed
+  As a developer
+  I want to test known bad pages to see if they render properly
+
+
+  Scenario: Login to an existing account
+  Given I visit "http://anant:agarwal@stage-edx-001.m.edx.org/"
+  When I click "LOG IN"
+    And I login with "ddieker+admin@gmail.com" in the "email" field
+    And I login with "password" in the "password" field
+    And I press "Access My Courses"
+  Then I should see an element with class of "user" within "3" seconds
+
+  Scenario: See all children when there are children crashes
+  Given I visit "http://stage-edx-001.m.edx.org/courses/MITx/6.002x/2012_Fall/wiki/6.002x/"
+  	And I click "See all children"
+  	And I click on a child
+  Then I should not get a server error
+  
+  Scenario: See All Children when there are no children crashes
+  Given I visit "http://stage-edx-001.m.edx.org/courses/BerkeleyX/CS188.1x/2012_Fall/wiki/CS188.1x/"
+    And I click "See all children"
+  Then I should not get a server error
\ No newline at end of file

lms/djangoapps/acceptance_testing/features/wiki-bugs.py

+from lettuce import * #before, world
+from selenium import *
+import lettuce_webdriver.webdriver
+from selenium.webdriver import ActionChains
+from selenium.webdriver.support.ui import WebDriverWait
+import re
+
+import os.path
+import sys
+path = os.path.abspath(os.path.join(os.path.dirname(__file__), 'static'))
+if not path in sys.path:
+    sys.path.insert(1, path)
+del path
+from helpers import *
+
+@step(u'And I click on a child')
+def and_i_click_on_a_child(step):
+	world.browser.find_element_by_xpath("//table//tbody//tr[2]//td//a").click()
+
+@step(u'Then I should not get a server error')
+def then_i_should_not_get_a_server_error(step):
+	wait_until_class_renders('global slim',2)
+	check_for_errors()
+