Add basic comments overview
Fix style guide violations and best practices
Fix hound complaint about indentation
Proper indentation again
remove schema trash from carts
Fix hound complaint about indentation
Proper indentation again
Delete comments when deleting users or libraries

Also added `has_many :comments` to the user model
Merge branch 'feature-comments-additions' of github.com:BiteKollektiv/fairnopoly into feature-comments-additions
Merge pull request #955 from BiteKollektiv/feature-comments-additions

Feature comments additions