* docs: add matrix space information and update readme
We recently created a Matrix Space which includes both the original room, and a new contributing room. This commit also performs some basic housekeeping on the README.md, including but not limited to: factorizing the security section, adjusting the main description, clearly outlining areas where help is wanted, adding information related to the helm chart, adding more details in the features summary, grammar, and misc other changes.
* docs: update security to be in line with the readme
Updated all links to use https://www.authelia.com/docs/.
Removed all comment sections from documented configuration on the documentation site and replaced them with their own sections.
Made all documentation inside config.template.yml double hashes, and made all commented configuration sections single quoted.
Added .yamllint.yaml to express our desired YAML styles.
Added a style guide.
Refactored many documentation areas to be 120 char widths where possible. It's by no means exhaustive but is a large start.
Added a statelessness guide for the pending Kubernetes chart introduction.
Added labels to configuration documentation and made many areas uniform.
James Elliott
Chris Smith
Clément Michaud