Publishing/Deleting checks

[rahulbarwal]

1. Publishing

• Check for any book in the group, with no chapters, or chapters with no content.

• Store these things in documents(book and chapter) itself. Modify following to suit this

  • Create
  • Update
  • Delete

2. Deleting

• If it already contains content. warn about its deletion.
• Still published things should not be allowed to delete.