Add autofocus to input field

[Kombustor]

Supported in all major browsers, allows the user to immediately start typing after loading the page.

[benbusby]

This seems to be working for me on all current browsers aside from Firefox (only tested v76, macOS). Do you have a way of testing a fix that would include support there as well? If not, I make a note of it and look into it later.

[benbusby]

Just the one small comment. Let me know your thoughts and I'll merge accordingly.

[Kombustor]

This seems to be a firefox bug. I currently don't have it installed, but it should be supported.

We could focus the element by using JS (document.getElementById('search-bar').focus() on page load), but this is certainly not the best solution. And it didn't work for me in Chrome using the console.

EDIT: We could implement both, and the JS solution is a "backup" solution.

[Kombustor]

Does it work for you in firefox like this? @benbusby

[benbusby]

Hmmm no, the updated autofocus field didn't fix it. I'll still merge this in since it seems to be working everywhere else, but I'll make a separate issue for looking into it further on Firefox.

Thanks for contributing!