[#69129996] articulos y categorias funcionando
[#69129996] removed previos association between article and category
[#69129996] updated articles and categories associaton
[#69129996] show dinamically the articles
[#69129996] add subtitle
[#69129996] add vendor styles and js
[#69129996] change static pages layout
[#69129996] add autocomplete category for article
Merge 69129996-articulos-backend to master

[Completes #69129996]