Add support to redirect routes that end with a slash (when possible).
	modified:   api/urls.py
	modified:   atmosphere/settings/__init__.py
	new file:   atmosphere/slash_middleware.py

	modified:   atmosphere/urls.py
Fix feedback post. Consolidate and refactor. PEP8 Compliance.
	modified:   api/email.py
PEP8 Compliance.
	modified:   api/email.py
Merge branch 'abyssinian-nightjar' of github.com:iPlantCollaborativeOpenSource/atmosphere into abyssinian-nightjar