Add Open Ecoacoustic Sponsor Information

We should disclose that this project is sponsored by Open Ecoacoustics

Changes

• Added Open Ecoacoustics branding to README.md
• Added Open Ecoacoustics sponsor information to the home page
• Refactored out how links work on the home screen (there was previously one inline link. This caused it to have it's own specific styling. I've refactored it out to a common class)
• Uploaded PNG and SVG of open ecoacoustic logo

Problems

None

Issues

Fixes: #2087

Visual Changes

Open Ecoacoustic branding on home page

Open Ecoacoustic branding on README

For additional mock-ups see #2087

Final Checklist

• Assign reviewers if you have permission
• Assign labels if you have permission
• Link issues related to PR
• Ensure project linter is not producing any warnings (npm run lint)
• Ensure build is passing on all browsers (npm run test:all)
• Ensure CI build is passing
• Ensure docker container is passing (docs)