fdo#53472 Created Dynamic Integral Node classes. Integrals size made dependent on body.

Change-Id: I0348155f2429cf7dd3cbe7d71f333879ec6de980
Reviewed-on: https://gerrit.libreoffice.org/8569
Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>
Tested-by: Norbert Thiebaud <nthiebaud@gmail.com>