Fixing packaging of templates and static files

MANIFEST.in

@@ -0,0 +1,2 @@
+recursive-include airflow/www/templates *
+recursive-include airflow/www/static *

setup.py

@@ -10,6 +10,7 @@ setup(
     version='0.1',
     packages=find_packages(),
     include_package_data=True,
+    zip_safe=False,
     scripts=['airflow/bin/airflow'],
     install_requires=reqs,
     author='Maxime Beauchemin',