Collection to do

[rubenwardy]

• [x] Allow editing name
• [x] Fix unapproved packages showing in collections
• [x] Fix broken images on screenshotless mods
• [x] Change favorites icon to a star
• [x] Search field to quickly add packages from edit page
• [x] Ability to remove packages on the edit page
• [x] Add markdown body
• [x] Add API
• [x] Use collection for featured/spotlight. Remove protected tags
• [x] Ordering
• [x] Make it clear that favorites are public by default
• [ ] Link to https://content.minetest.net/collections/?package=Wuzzy/mineclone2