Carousel Pagination - controls & position indicator

[mbwatson]

let's enhance this carousel even more by adding pagination controls and indicators. these, this functionality is commonly represented as a row of translucent dots, each of which represents a panel in the carousel, and the current or active panel's dot is emphasized visually in some way, say, it's opaque while the others remain translucent.

the design doesn't matter as much as the fact that the carousel needs to continue to be fully accessible, so these extra controls and indicators need to also be accessible.

we may also consider not auto-advancing the carousel per the recommendation on the section508 website.