Merge pull request #55 from g2-aj/branch_alshahna

Branch alshahna
Merge pull request #56 from g2-aj/branch_alshahna

UI fixes in clerk menu
Solved the multiple printout bug, added check if the book is already returned
Merge pull request #57 from g2-aj/branch_kris

Solved the multiple printout bug, added check if the book is already ret...
manual merge update