* Add default preview images
* Update application.rb
* Adds app assets path in API mode
* Cleans up file
* Create assets.rb
An initializer for font assets (for image generation)
* Updates to Canvas and Coordinator
* Update parties_controller.rb
* Adds retry header if generation is still in progress
* Streams S3 content instead of redirecting to prevent 302
* Update coordinator.rbs
* Create previews.rake
A rake task for generating images offline
* Add commands to build phase
