Adds render_template_custom to views.py.

This'll allow us to add custom values to templates immediately before rendering. Useful
for New Relic now, maybe other stuff in future as well.
Adds New Relic test code to run.py; commented it out.
Merge branch 'master' of github.com:total-impact/total-impact-webapp

Conflicts:
	totalimpactwebapp/templates/base.html