Code cosmetics

Fixes func in helper,web
Fixes for pdf reader
fixes for calling from another folder
renamed to calibreweb for importing in python caller script

cps/editbooks.py

@@ -362,42 +362,6 @@ def upload_single_file(request, book, book_id):
                 "<a href=\"" + url_for('web.show_book', book_id=book.id) + "\">" + uploadText + "</a>")
 
 
-def upload_single_file(request, book, book_id):
-    if 'btn-upload-cover' in request.files:
-        requested_file = request.files['btn-upload-cover']
-        # check for empty request
-        if requested_file.filename != '':
-            file_ext = requested_file.filename.rsplit('.', 1)[-1].lower()
-            filepath = os.path.normpath(os.path.join(config.config_calibre_dir, book.path))
-            saved_filename = os.path.join(filepath,  'cover.' + file_ext)
-
-            # check if file path exists, otherwise create it, copy file to calibre path and delete temp file
-            if not os.path.exists(filepath):
-                try:
-                    os.makedirs(filepath)
-                except OSError:
-                    flash(_(u"Failed to create path for cover %(path)s (Permission denied).", cover=filepath),
-                          category="error")
-                    return redirect(url_for('show_book', book_id=book.id))
-            try:
-                requested_file.save(saved_filename)
-                # im=Image.open(saved_filename)
-                book.has_cover = 1
-            except OSError:
-                flash(_(u"Failed to store cover-file %(cover)s.", cover=saved_filename), category="error")
-                return redirect(url_for('web.show_book', book_id=book.id))
-            except IOError:
-                flash(_(u"Cover-file is not a valid image file" % saved_filename), category="error")
-                return redirect(url_for('web.show_book', book_id=book.id))
-            if helper.save_cover(requested_file, book.path) is True:
-                return True
-            else:
-                # ToDo Message not always coorect
-                flash(_(u"Cover is not a supported imageformat (jpg/png/webp), can't save"), category="error")
-                return False
-    return None
-
-
 def upload_cover(request, book):
     if 'btn-upload-cover' in request.files:
         requested_file = request.files['btn-upload-cover']
@@ -411,6 +375,7 @@ def upload_cover(request, book):
                 return False
     return None
 
+
 @editbook.route("/admin/book/<int:book_id>", methods=['GET', 'POST'])
 @login_required_if_no_ano
 @edit_required