feat: Add SSE support for new polls being created

[NickJ-7010]

What

what the PR changes

• Extends the SSE support to allow for polls to be populated on the homepage immediately after they are created.
• Changes the html structure in the template for the poll list to simplify it down slightly.
• Adds local running instructions for podman / docker.

Why

why these changes were made

• To address issue Populate new polls as they are posted #9

Test Plan

how did you verify these changes did what you expected

Tested in browser with all of the possible ways you could change the viewing and voting controls of the polls and compared against what was shown from the server side rendering.

Env Vars

did you add, remove, or rename any environment variables

No

Documentation

did you add or update any documentation. PRs should, at the minimum, update documentation when they make existing documentation out of date.

Added a section in the README clearly instructing people to use podman or docker to run the service locally.

Checklist

• Tested all changes locally

[datadog-computersciencehouse]

⚠️ Warnings

Your PR has warnings. Please review the issues below.

🚦 1 Pipeline job failed

SonarQube | Build and analyze

View in Datadog · View in GitHub Actions

Useful? React with 👍 / 👎

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 11570f3 | Docs | View more details | Give us feedback!}