fixed setup.py, a type and removed the possibility to use multiple statements per block. The latter makes it easier to write custom tags

--HG--
branch : trunk
diff --git a/setup.py b/setup.py
index a12d998..837de51 100644
--- a/setup.py
+++ b/setup.py
@@ -131,7 +131,7 @@
             ]
         )
     },
-    extras_require={'i18n': ['Babel>=0.8']}
+    extras_require={'i18n': ['Babel>=0.8']},
     entry_points="""
     [babel.extractors]
     jinja2 = jinja.i18n:babel_extract[i18n]