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
added ability to have multiple recipients in the email
updated all tests to work with multiple recipients
added method for creating emails with multiple recipients
admin uses the create_email method
tested multiple recipients and added logic for handling no recipients
updated the docs to reflect the new recipients field
converted entity emailer models over to new entity event sources
subentity_kind -> sub_entity_kind
corrected the emailer migrations for entity events
added a function to convert events to emails
added more tests for checking group subscriptions and email conversions