🐛 Handle blank query and snippets

This commit will address blank catalog searches and how it interacts
with snippets.  Prior, when the user submitted a blank catalog search,
the entire indexed text will be returned.  This is not desired because
if we're looking at a book with a hundred pages, then that's a lot of
rendered text.  Instead, if we don't have a query string then we will
also return.

app/helpers/iiif_print/iiif_print_helper_behavior.rb

@@ -7,7 +7,7 @@ module IiifPrint::IiifPrintHelperBehavior
   # rubocop:disable Rails/OutputSafety
   def render_ocr_snippets(options = {})
     snippets = options[:value]
-    return if snippets.blank?
+    return if snippets.blank? || params[:q].blank?
 
     snippets_content = [content_tag('div',
                                     "... #{snippets.first} ...".html_safe,