the syntax for running the rake task wasn't correct.

Cleaning up the heroku admin command bit to match the form used in Administration-guide.md and clarify the wording a bit.

Removing some of the confusion around what format S3 bucket names and regions should be entered as well as providing an example of an S3 policy that follows best security practices for this sort of thing.

Under ## General dependencies:
apt-get needs sudo and install was typed wrongly.

Corrected spelling error for "install"

In some VPS templates, they are not installed by default.

Disable DHE ciphers. We don't loose any compatibility as we already use TLS 1.2, and ECDH is faster and safer.
Also, it's better so specify the curve.

This is the conf I use here : https://tls.imirhil.fr/https/mstdn.io

s/rails/rake/

If the file package is not installed, we get "Validation failed: File has contents that are not what they are reported to be" when upload media.

Missing -u parameter to specify the mastodon user.

must be added to the Sidekiq invokation in your systemd file

The pull queue will handle link crawling, thread resolving, and OStatus
processing. Such tasks are more likely to hang for a longer time (due to
network requests) so it is more sensible to not make the "in-house" tasks
wait for them.

Closes GH-745.

make status pagination headers generation more lax about next page
existing

Heroku uses the referrer URL to point at the repo that should be deployed; from this page that includes part of a path that breaks the deployment (specifically /blob/master/docs/Running-Mastodon/Heroku-guide.md).

I've replaced the vanilla address with one that includes a specific reference to the root of the repo

Make the streaming API also handle websockets (because trying to get the browser EventSource interface to
work flawlessly was a nightmare). WARNING: This commit makes the web UI connect to the streaming API instead
of ActionCable like before. This means that if you are upgrading, you should set that up beforehand.

Add separate sections for Heroku and Vagrant deployments. Add guide for instance administration. Move 'Contribution guide' to 'Development guide'.