Migrate cg-site from jekyll to pages 11ty template

[jamesthebrooks]

• First commit - clone of the 11ty Pages template as starting point
• Initial setup - required libraries and their configuration
• Data migration
• JavaScript Migration
• Styles migration
• Layouts migration and main menu setup
• Images migration
• PDF documents migration
• Home page migration, contact, pricing, resources, signup, and support packages migration
• Docs migration
• Knowledge base migration
• News migration
• Dynamic sidenav setup and configuration
• Pages’ layouts and header setup
• Pages’ pages migration: home, contact, features, federalist, pricing, success stories
• Pages’ knowledge base migration
• Pages’ documentation migration (includes sidenav)
• Full review w/ current site, make sure it's got content parity
• launch & test

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EVERYTHING BELOW THIS LINE FOR HISTORY TRACKING

These are the general needs for bringing cloud.gov's website up to date.

You can do this in whatever order makes sense!
As you get to the work, flesh these out into real tickets, real acceptance criteria, etc. Feel free to review w/ team
Open PRs as you go, with federalist links. OK to have some stuff 'broken' as you work it out.
Add me and @pburkholder as reviewers for this work.

• Migrate from Jekyll => eleventy (build, webpack, .eleventyconfig.js, etc. slightly different flavors of liquid in the templates)
• add and configure mermaid
• ~~Migrate styles and dependencies Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Migrate home page Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• Get sidenav migrated and styled
• Get sidenav child items loading dynamically from folder
• Get anchor library migrated over
• Get anchor library styled correctly
• Migrate and set up table of contents
• Why Cloud Migration to 11ty, basic home page setup, broad strokes migrating styles. #2
• ~~Overview Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Technology Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Customer stories Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Getting started Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Compliance Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Team docs Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• Documentation
• ~~Deploying apps Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Services Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Managing Apps Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Managing orgs Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~News Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Knowledge Base Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• ~~Pages Migration to 11ty, basic home page setup, broad strokes migrating styles. #2 ~~
• Contact Us Migration to 11ty, basic home page setup, broad strokes migrating styles. #2

~~Copied from previous version:~ ~
Content updates ( see sitemap list here: https://docs.google.com/spreadsheets/d/15JjoaESsE9jzEAcR5jXK9-k8pQJ0DM-5jDVHDzQa0E0/edit and this summary from Q2 here: https://docs.google.com/document/d/1IGr4MreXIqjKr8UDNucXuLDBjKqz_x1fRQvwaPwN88I/edit )
~~ ... specifically: remove the mentions of 18F that make it sound like they are still owning cloud.gov~~
~~ ... specifically: simplify / remove redundant content -- say the thing once and link to it rather than repeat it~~
~~ ... specifically: unify content/article formats within the groups (Knowledge base, news/blogs)~~
~~ ... specifically: migrate PDF content to HTML, delete the old PDFs~~
~~ ... specifically: remove (preferred) or clearly identify and norefer/nofollow any external links to non .gov sites~~
~~ ... specifically: redirect any removed URLs to the next newest content~~
~~ ... specifically: capitalize Cloud.gov everywhere~~
~~ ... specifically: alt text for images/accessibility issue~~