Accessibility fixes

[mxdanger]

Changes:

• Improved screen reader accessibility
• Used more contextual input types
• Added better autofill support

What still needs fixing:

• On pagination.html, aria-current="page" should be appropriately set on the active pagination button. I don't know how to do this, so I'll need some help.

This PR will need to be tested by a maintainer, I'm unable to locally test most of these changes.

[Gusted]

As far code is concerned, given no name= is changed nor any classes, everything just works. Also made sure by doing a quick run down of the site