pidgin/nest

3f2e07a5be16
Install page: Show toc and add older versions link

Modified the install page so that it now shows:
- The table of contents at the beginning of the page. Had to modify the
markdown a bit to make this appear (it only shows it if there's no first level
heading in the md file).
- Added a new section to tell users where they can find the installers/binaries
for older versions of Pidgin/Finch.

Testing Done:
Ran `dev-server.sh` and verified content looked as intended

Reviewed at https://reviews.imfreedom.org/r/834/
{
"version": "0.1",
"language": "en",
"words": [],
"dictionaryDefinitions": [
{
"name": "Pidgin",
"path": "./tools/pidgin-words.txt"
}
],
"dictionaries": [
"Pidgin",
"en-us",
"en-gb",
"companies"
],
"flagWords": [],
"ignorePaths": [
"node_modules/**",
"hugo/themes/learn/**",
"hugo/public/**",
"public/**",
"tools/paths.txt",
"package-lock.json",
"package.json",
"hugo/data/**/*",
"convey.yml"
],
"overrides": [
{
"filename": "hugo/content/**/*.es.md",
"language": "es"
}
],
"enabledLanguageIds": [
"css",
"dockerfile",
"html",
"javascript",
"json",
"jsonc",
"markdown",
"plaintext",
"python",
"scss",
"text",
"toml",
"yaml",
"yml"
]
}