Remove non-alphanumerics (except quotes) from search query

[colagrosso]

That is, don't replace non-alphanumerics with a space. This matches the behavior of Formatter::RemoveDiacriticsAndNonalphanumerics(), which would be used here except that function would also remove quotes. We actually discussed not introducing spaces previously, but I made a mistake and didn't apply the same change to the user's search query: #470 (comment)

This change fixes queries with compound words like:

Haycraft-Queen

and also fixes queries for authors with apostrophes:

O'Neill

No changes to existing DBs are necessary because they already have terms like haycraftqueen and oneill stored in IndexableCollections and IndexableAuthors.

Fixes #484

[colagrosso]

Based on the discussion in #484, I added a special case for replacing hyphens with spaces. Let me know how it looks to you and if you want me to move it into a Formatter function (or combined with Formatter::RemoveDiacriticsAndNonalphanumerics()).

With this change users can search for these terms:

beta to match Alpha-Beta
queen to match Haycraft-Queen

These searches also work as expected:

Alpha-Beta
Alpha
Haycraft-Queen
Haycraft

I don't think these queries should work, and they do not:

AlphaBeta
HaycraftQueen

This commit changes IndexableText, IndexableAuthors, and IndexableCollections, so existing DBs need an update. This will update all published books:

cd /standardebooks.org/ebooks
for BOOK in $(find /standardebooks.org/ebooks -maxdepth 1 -type d)
do
  tsp nice /standardebooks.org/web/scripts/deploy-ebook-to-www --verbose --no-build --no-images --no-recompose --no-epubcheck --no-feeds --no-bulk-downloads "$BOOK"
done

And this PHP code will update placeholders:

<?
require_once('/standardebooks.org/web/lib/Core.php');

$ebooks = Ebook::GetAll();

foreach($ebooks as $ebook){
        if($ebook->IsPlaceholder()){
                print('Saving ' . $ebook->Identifier . "\n");

                // Need to force `Ebook::GetAllContributors()` to be called before `Ebook::Save()`. Otherwise, authors and translators will be deleted.
                $ebook->Authors;

                $ebook->Save();
        }
}

[acabal]

OK great. This looks good, I'll merge it in and start the updates now. Thanks!