Conversion elder benchmark to notebook

ProcessLib/ComponentTransport/Tests.cmake

Tests/Data/Mechanics/Linear/SimpleMechanics.ipynb

Tests/Data/Notebooks/nbconvert_templates/collapsed.md.j2

...ta/Parabolic/ComponentTransport/elder/elder_reference.pvd

...rabolic/ComponentTransport/elder_jupyter/elder_jupyter.py

Tests/Data/requirements.txt

web/content/docs/benchmarks/hydro-component/elder/elder.gif

web/content/docs/benchmarks/hydro-component/elder/index.md

web/content/docs/benchmarks/python-bc/elder/index.md

...cs/processes/component-transport/hydro-component/index.md

web/layouts/shortcodes/rawhtml.html