Revert "Remove 'API & software' tab from default docs"
Revert "Remove 'API & software' tab from default docs"

This reverts commit 81d5fc4fcc84eba157487a3b2b87cf04c46e2d16.

Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode