[x] search is off in books: hw3, lane
[x] search fails to produce any results other than "1" in: mgf
[x] can't close flash messages (not that there are many, or indeed, any, at the moment ... ?)
[x] add these again (where?):
[x] flash[:notice] = t(:nosuchentry_in_selectedbook)
[x] flash[:notice] = t(:nosearchresults_in_selectedbook, book: t("books.#{@page.book.slug}"))
[x] flash[:warn] = t(:nosearchresults)