Replace section in SECTIONS

* templates/sections.html: Replace specification with sources.

Move files.

renamed: site/org/ident.org -> site/org/documentation/ident.org
renamed: site/org/precis.org -> site/org/documentation/precis.org

Add CSS for DETAILS.

* assets/styles/main.css: Add styling for DETAILS.

Contain INSTALLATION instructions.

* site/org/installation.org: Simplify formatting, make clear
delineations.

Modify 404

* site/org/404.org: Reword.

Add CCBYSA4 SVG

* assets/image/ccbysa4.svg: New file.

Replace scp with rsync on deploy.

Makefile: Use rsync.

Clarify LICENSE on index page.

* site/org/index.org: Bump `last-modified` and clarify license.

Change LICENSE

* LICENSE: Use CC-BY-SA 4.0
* docs/README.org: Modify License field.
* README.md: --

Add stylesheets.

* assets/styles/main.css: New file.
* assets/styles/org-webring.css: New file.

Add donation_receiving script.

* assets/scripts/donate_receiving.js: New file.

Add new pages.

* site/org/documentation.org: New file.
* site/org/specification.org: New file.

Simplify grammar in installation instructions

* site/org/installation.org: Simplify grammar.

Revise deploy target in Makefile

* Makefile: Use variable.

Modify README to declare Soupault

* docs/README.org: Replace opam with soupault directly.
* README.org: --

Add templates folder.

* templates/banner.html: New file.
* templates/footer.html: --
* templates/main.html: --
* templates/sections.html: --

Remove quick-links widget.

* soupault.conf: Remove quick-links widget.

Add more dependencies in README

* docs/README.org: Add more dependencies.
* README.org: --

Add plugins.

* plugins/git-timestamp.lua: New file.
* plugins/section-link-highlight.lua: New file.

Add instructions section in README

* docs/README.org: Add instructions section, listing dependencies and
actions.
* README.org: --