moved trans extension from jinja2.i18n to jinja2.ext and fixed some more unittests

--HG--
branch : trunk
diff --git a/setup.py b/setup.py
index 7ba463a..0c4fb31 100644
--- a/setup.py
+++ b/setup.py
@@ -134,6 +134,6 @@
     extras_require={'i18n': ['Babel>=0.8']},
     entry_points="""
     [babel.extractors]
-    jinja2 = jinja.i18n:babel_extract[i18n]
+    jinja2 = jinja.ext:babel_extract[i18n]
     """
 )