Read book is now tied to the right downlolad books for guest users (fixes #110)

cps/templates/detail.html

@@ -132,10 +132,10 @@
             </div>
           {% endif %}
 
-          {% if g.user.is_authenticated %}
+            {% if g.user.kindle_mail and g.user.is_authenticated %}
-            {% if g.user.kindle_mail %}
             <a href="{{url_for('send_to_kindle', book_id=entry.id)}}" id="sendbtn" class="btn btn-primary" role="button"><span class="glyphicon glyphicon-send"></span> {{_('Send to Kindle')}}</a>
             {% endif %}
+          {% if (g.user.role_download() and g.user.is_anonymous()) or g.user.is_authenticated %}
               <div class="btn-group" role="group">
                 <button id="btnGroupDrop2" type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                   <span class="glyphicon glyphicon-eye-open"></span> {{_('Read in browser')}}

cps/web.py

@@ -1203,7 +1203,7 @@ def feed_get_cover(book_id):
 
 
 @app.route("/read/<int:book_id>/<format>")
-@login_required
+@login_required_if_no_ano
 def read_book(book_id, format):
     book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
     if book: