Update to Django=1.6
Update sha_constructor to hashlib.sha256
Updated urls to 1.6
Updated year in licence
Merge branch 'master' of https://github.com/KyivPy/symposion into KyivPy-master

Conflicts:
	symposion/cms/urls.py
	symposion/proposals/urls.py
	symposion/proposals/views.py
	symposion/reviews/urls.py
	symposion/schedule/urls.py
	symposion/sponsorship/urls.py
Use sha1 instead of sha256 for compatibility
Merge branch 'KyivPy-master'