Revert "Añadido contenido de Dropbox"

This reverts commit 6c64b5b0439c3beed309db2ae44ba1d603651908.
Revert "Revert "Añadido contenido de Dropbox""

This reverts commit 8564b3f2ffd2a0cecc0d3b9520de3ba37522e22b.