users/constants.py: pep8 fixes.
users/decorators.py: pep8 fixes.
users/forms.py: pep8 fixes.
users/models.py: pep8 fixes.
users/views.py: pep8 fix.
views.py: pep8 fix.
Set titles in templates.
Merge branch 'master' into add-users

Conflicts:
	app/views.py
	run.py
	runtime.txt
Add login, logout, and register links to nav.
Remove whitespace in decorators.py.
Use Flask-Login to handle login.
users/decorators.py: Delete.

login_required is now handled in Flask-Login.
PEP8: Removed unused import and add whitespace.