altered book delete status to success, completed TODO-05 (books must be sold to be deleted - with tooltip to explain), and added new BUG-17 - changing some fields of parent book need to be reflected into sub book

main.py

@@ -490,9 +490,8 @@ def book(id):
                 st.SetMessage( "This is a parent book, cannot delete it without deleting sub books first" )
                 return redirect( '/book/{}'.format(book.id) )
             else:
-                st.SetAlert("warning")
-                st.SetMessage("WARNING: Deleting being tested at present.<br>")
-                st.AppendMessage("Deleted {}".format(book.title) )
+                st.SetAlert("success")
+                st.SetMessage("Deleted {}".format(book.title) )
                 pid = 0
                 if len(book.parent) > 0:
                     pid = book.parent[0].id