Clean up application config a little.
Simply use ENV for configuration for now.
Allow DRAGONFLY_SECRET and API_TOKEN_SECRET to re-use SECRET_KEY_BASE.
Add an initializer to check for the presence of required ENV vars
Add support for email-based exception notifications.
Fix bookmarklet template.
Add legacy support for referenced_guid when replying.
Display more/all pings in server admin.
Tweak replying. OPs are now auto-quoted.
Bump version to r102
Update '.gitignore'
Change 'config/deploy/production.rb'
Remove appsignal stuff
Don't use S3 datastore
Deploy from fork repo
Set correct Ruby version
Don't use chruby
Use 'capistrano/rbenv'
Fix dotenv config

We don't use 'dotenv-deployment' for production because it doesn't work
for our setup.
Remove turbolinks crap