Added a utils.loadTemplate convenience method
Start of user and settings admin pages
Use new bootstrap-meteor-login package
More work on user listing page
Fixes for role management.

Note: Hack needed to add and remove roles, see: https://github.com/alanning/meteor-roles/issues/5
Use snake-case for classes
Clean up and consolidate server-side code
Updated roles package (fix contributed by yours truly)
Site settings implemented