fix namespace warning with the index var
now only sends the template without rendering the article list
because now the list of articles is not rendered by the server handler I add the templates for render the list with the cliente handler.
add the handler for the "/admin/get-list-of-articles"
add thest for teh remove_article-spec.py and get_list_of_articles-spec.py modules
add handler for the client side
add the module that response a list of articles
first version by manage the article removal
remove unnecessary spaces