Book columns now use underscore instead of camel case
Added birth/death date to author

column names now use underscore
Updated SQL script with author about and birth/death date
Custoemer email column now uses underscore

Updated SQL script
Added error message for non existing author
Added findByAuthor with pagination in book repostory/service
Lazy model with books by author
Updated author bean with lazy data model
Updated author.xhtml with books