[jernestmyers]

Does two main things:

1. Refactors how Aladin is loaded and how its errors are handled. Now, loading the Aladin script is non-blocking. If Aladin is done, the same overlay as the "lost context" overlay is shown with a message and a "retry" button. Also, the lightcurve popup overlay has been adjusted to render about the overlay so that an Aladin error doesn't disrupt the lightcurve preview functionality on the main page.
2. Refactors error handling regarding authentication. Makes it more clear when an error loading sources is related to authentication, and gives users instructions to log in or contact us (stubbed with the same environment variable for the "contact us" link in the bottom left footer.

I guess there's a third thing: there was a bug with the VITE_ORGANIZATION_NAME= env variable that prevented its use. It's been fixed.