Comment 1 for bug 2044853

I've started a collab branch here: https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/collab/sleary/LP2044853-progress-bar-labels

The top three commits:

* adds ariaLabel input to the progress components
* adds gridLabel to the grid component, which will be passed to the grid loader progress bar (and will be used as the table <caption> in the future table-based grid)
* supplies the ariaLabel strings for all inline progress components

Still to do: specifying the gridLabel string for each grid.

Please check the ariaLabel strings I've added and see if they make sense in context!