Improved sermon authors page

We've given the sermon authors page a small refresh! Instead of displaying each author in a card, we now use a table layout. This denser format makes it easier to scan through authors quickly while still showing extra details like the number of sermons they've preached and the date of their last sermon. You can even sort by these the headings.

We've also added a new search input, making it easier to find a specific author—especially helpful for churches with a long list of ministers.