added context loader for entity emailer for more advanced contexts
tested context loader loading
tested function to load and obtain context
tested rendering with loaded context
added tests with a template on disk
added basic view for displaying any email
added more docs and tests to the email viewer
made docs a bit more clear
forgot to add test templates that are on disk
Merge pull request #19 from wesleykendall/develop

Adds loadable contexts and email view urls