Lemmy Community-Browser - Update

cross-posted from: https://feddit.de/post/555981

cross-posted from: https://feddit.de/post/555950

A small update of the community browser:

• Display of the community description (by clicking on the title)
• Easily copy the community URLs
• Accepts query parameters for the search (e.g.: https://browse.feddit.de/?search=fediverse)
• Minor optimizations