Include a search engine in the catalogue

[genismauri]

To facilitate the search of services, this could have 3 options:

• a pull-down menu with the supported languages of the services.
• a checkbox filter with the typology of available services.
• a word searcher

The result should be to present the catalogue of services filtered by the options selected.
There is no need to have a "submit" or "refresh" button, but the site should be updated automatically.