Add mini_magick gem
@wip Stopping here
@wip Add test avatar image to `spec/fixtures`
@wip Use a base 100x100 sched.do logo file
@wip add test avatar image
@wip stopping on image compositor
@wip Add S3 keys to sample.env
@wip Update paperclip and add aws-sdk gem
Comment out ImageCompositorSpec tests
Add dev/prod configuration for paperclip
Use long constant if only referenced once
Tidy up test

* Test asserts suggestion count can be greater than 0
Add placeholder configs to Event and spec
Add Event.image attribute
@wip Add has_attached_file to Event