Finish converting remaining old code to Vue style about koa11y HOT 1 OPEN

The major item still left to be converted is the imageAlts modal. Most of everything else is already done.

All logic should be handled inside of the main Vue app, in a separate .vue component file, or in a purely logic file that can be imported in. There are still 38 lines of code that reference jQuery. These could be updated to move the tasks they are doing over to a Vue way of doing those tasks.

from koa11y.