Focusing rewrite

It's easier (and more reliable) to use a native focusable element than to check for clicks on every element to determine focus.
This is practically a requirement for most mobile devices with keyboards that only appear for normal textareas (see #3)
To do:
- [x] Use textarea to attach focus
- [ ] Disable native focus indicators on textarea
- [ ] Possibly use spaces to position the cursor in the right location for text entry (would require a separate function - not after each key)
- [ ] [Optional] Disable autocorrect/suggestions/other native things, if possible.