Update extension command doc string
Add note to README about building pdf.js
Realtime update added replies to Document view

Since, for document view to had to add the new annotation manually to the rootScope.annotations, we have forgotten to check whether is it a reply or not.
Now replies are not added. The original error also went away when the view(scope) was changed.
Add production.ini and strip down development.ini

The Procfile now uses production.ini which should use a set of sane
defaults and includes more comments to explain what's going on.
Add support mail settings from environment
Prefer environment variable for ES connection
document docker links
support DATABASE_URL env variable
move alembic to its own .ini