Changes

• Levels can now have their names and descriptions edited after upload, via a button in the level's popup.
• Users can now upload profile pictures!
• A random level can now be selected on the search page

Fixes

• Usernames can no longer be empty or contain spaces and special characters. All usernames must now be between 5 and 30 characters. Users who had previously registered with usernames shorter than this will get to keep their names.