Revert "AVANCE"

This reverts commit 4b5fa6d070b07f4a86212a32f83327e1e504d480.

Conflicts:
	laguiaatletica/paginas/contactanos.html
	laguiaatletica/paginas/entrenamiento.html
	laguiaatletica/paginas/maratones.html
	laguiaatletica/paginas/nutricion.html