Fix typo and adjust to new name of template class

lib/python/Products/Five/browser/tests/pages.txt

@@ -157,7 +157,7 @@ Make sure that global template variables in ZPT pages are correct:
   >>> print view()
   View is a view: True
   Context is testoid: True
-  Contaxt.aq_parent is test_folder_1_: True
+  Context.aq_parent is test_folder_1_: True
   Container is context: True
   Here is context: True
   Nothing is None: True

lib/python/Products/Five/browser/tests/template_variables.pt

 View is a view: <tal:block 
   content="python:hasattr(view,'context') and hasattr(view, 'request')" />
 Context is testoid: <tal:block content="python:context.id == 'testoid'" />
-Contaxt.aq_parent is test_folder_1_: <tal:block 
+Context.aq_parent is test_folder_1_: <tal:block 
   content="python:context.aq_parent.id =='test_folder_1_'" />
 Container is context: <tal:block content="python:container is context" />
 Here is context: <tal:block content="python:here is context"/>
@@ -10,7 +10,7 @@ Default works: <tal:block replace="non_existent_var|default" />True
 Root is the application: <tal:block 
   replace="python:repr(root).find('Application') != -1" />
 Template is a template: <tal:block 
-  replace="python:repr(template.aq_base).startswith('<ZopeTwoPageTemplateFile')" />
+  replace="python:'ViewPageTemplateFile' in repr(template)" />
 Traverse_subpath exists and is empty: <tal:block 
   replace="python:traverse_subpath == []" />
 Request is a request: <tal:block