Revert "Merge branch 'feature/find_alberta_cleanup' into 'master'"

This reverts merge request !455 (merged)

There are several issues with the update of the FindAlberta module. Some issues are related to a link order !469 (closed) , others are related to multiple definitions of symbols in shared library builds #121 (closed) Additionally, the PDELab builds fail in the docker image creation, due to errors with AlbertaGrid in cmake.

These issues need to be investigated before the FindAlberta file update can be merged again