To filter books that are in the office

[YuliyaMagdenko]

I as a user
Want to find only books that are in the office book shelf
So that I can look what is in the office righnt now, take it and don't need to spend time trying to find the book that is on hands.

Description

1. Need to mark books that are:

• In office - books that no one is reading now
• On hand - books that someone is reading now
• On you - this label is shown only if the user is reading this book right now.

The label is shown on the book cover at All books and Book pages.

• If someone is reading the book now and the book has several copies and 1 or more copies are in the office, it has "On hand" and "In office" labels for everyone.
• If someone is reading the book now and the book has no copies, it has "On hand" and "In office" labels for everyone.
• If the user is reading the book now and the book has no copies, the book has "On you" status for him, "On hand" for the others.
• If the user is reading the book now and the book has several copies and 1 or more copies are in the office, the book has "On you" and "In office" status for him, "In office" and "On hand" for the others.

2. The filter which allows to choose only the books that are in the office must be implemented.