added heroku 12 factor gem
Added Monban functionality to Listrr

* Added suggested changes to Layouts and Routes files
* Added dashboards controller, dashboards showpage
* Signed-out user redirects to new sessions page
Merge pull request #2 from AthenasWarriors/ad-monban-stuff

Added Monban functionality to Listrr
added better-errors to gemfile

*https://github.com/charliesome/better_errors
added better errors to gemfile