Slow downloads of Fall/Spring terms, no user feedback

When downloading full terms on https://bcsr.berea.edu/admin/systemManagement, Fall and Spring terms have around 200MB of data to download. The server takes a few seconds to zip that data, then the download begins (which also takes a few seconds).

The browser usually indicates the second part (i.e., download started) with an icon in the top right and a "download in progress" bar. There is nothing for the first part (i.e., server zipping files together) to indicate that process has begun.

We should give them a spinning wheel or some other indicator that the click of the link happened and they need to be patience as the zipping processes.