CreatePost page search and few minor changes

-Search functionality for the list of books on CreatePost page
-Minor changes to handlers
Retrieving all textbooks
Retrieving course name by course id
-Minor bug fixes include:
Linking unfinished pages to the Home page
Escaping appropriate strings when building tooltip for each book
Appropriate scales for mobile site (viewport)
Merge branch 'master' of https://github.com/hw3jung/Chanel