Revert "Updated error propagation page. re #9690"

This reverts commit ae47f9f7835b5381dfa1dad7c75f6113842dcd7a.
Revert "initial translation using pandoc links need fixing. re #9923"

This reverts commit a469335e903cd73e80d0b1f7f3534c3416a2f1de.
Merge branch 'feature/9923_concepts_to_rst' into develop