get reviews views mostly good

restore links to reviews in books show and index
cd app/views/reviews
for i in *html.haml; do mv -v $i $i.old; done
rails g bootstrap:themed Reviews
for i in *html.haml; do vimdiff $i $i.old; done

index:
s/review_path/book_review_path/
add a lot of [review.book, review] arrays that I don't understand from the
  original rails scaffolding
change the title to include the book we are reviewing
FIXME should truncate the text and make it a link to the review

show:
s/reviews_path/book_reviews_path(@review.book)/
s/edit_review_path/edit_book_review_path(@review.book, @review)/

_form
s/reviews_path/book_reviews_path(@review.book)/

create new review is failing on save - something about the delete button
make new review work

review show:
s/book_review_path(@review)/book_review_path(@review.book, @review)
delete button was not linking to the right spot
fix up review show

give it a user  book title
add @book to ReviewController show