The OfertaController have been refactored

OfertaRepository have been created
Refactoring the frontend view

The portada's view was refactored. Now the frontend.html.twig has the common code in the frontend view
I am going to use the Three level inheritance

Main Template - Level 1 is base.html.twig is basic block level template
Bundle Template - Level 2 is frontend.html.twig layout for the Blog bundle.
Page Template - Level 3 is  oferta.html.twig for the controller layout.