Note that in order to avoid display duplicated vertical scroll when
render a modal, we are add an `overflow: unset` rule. This rule
overwrite a vendor rule both in the modal we are adding and in the
modal we already have when creating a budget in admin section.
Set cookie duration to 365 days based on the AEPD's cookie usage guidelines.
Note from the document: "Cookies with a duration of up to 24 months are
considered acceptable as long as they are periodically updated."
Reference: https://www.aepd.es/guias/guia-cookies.pdf
Allow enabling from settings admin section.
Note that we set the z-index to 20 in order to will be greater than
the others z-index elements in the application like <header> on
mobile devices.
