Add announcement banner to training landing page
Training landing page: add core vim and private class signposts
Training landing page: tidy up
Training landing page: add a footer
DRY up "next-class" announcement with a partial
Customize header copy on training landing page
Linkify signposts on training landing page
Setup data.core_vim.alumni for 'Neil has coached N people'
Core Vim landing page: wrap content in rows/columns
Add Core Vim testimonials in an Orbit carousel
Core Vim landing page: add "N have attended" lead text
Create a helper to get number of core vim attendees
Add strong tags to 'what you will learn' bullets
Core Vim landing page: adapt layout for the large grid
Core vim landing page: remove 'with Drew Neil'