Re-use the code written for the library detail page for displaying authors and maintainers on the homepage. To avoid duplicating code, moved all the necessary pieces to a mixin to be used by HomepageView and LibraryDetail, and adjusted it to work for both.
- Adds functions to retrieve raw events from the Google Calendar API, extract the data we need for those events, and order those events by month for display
- Documents the new env vars
- Adds new setting for the google calendar API url
- Adds `/calendar/` to URLs, which displays the rendered google calendar **but didn't prettify it**
- Adds events to homepage, using the existing template
- Edits to the homepage template to show the events and make the paging arrows work
- Add featured library to context of home page
- Add the featured library to the homepage template
- Return a random library if no library is marked as featured
- Add link to library detail page
- Add default author image
- Add hover text with author name
- Limit "random" featured library to libraries within the most recent Boost version
- Return the most recent 3 news articles on the main homepage and most recent 2 on the beta homepage, as I wasn't sure which one we were using
- Updated both homepage templates
- Updated tests
