Now uses captions instead of descriptions in welcome_screen

[Scarletto]

Summary

The app now displays the caption of each event on the welcome screen, instead of the description.

Swapped description with caption in BaseEvent. Made description of partner events the caption inside PartnerEvent.

How to test

Steps to test the changes you made:

1. Look at the welcome screen lmao

[JAicewizard]

Looks good, regenerating fixes things for me but we can check next time to get it to work for you