The errors were introduced during the Angular upgrade done.

A new configuration has been added to build a version of the
application specifically configured to be used in an embedded way
when the backend is executed with the --with-web option.

This version can be build using the "npm run build-embedded" command.

First test to show files in results component

A deep code review and refactorization has been made in order to
improve the application structure.

The project configuration has been updated, firstly, to include
Angular Material, but also for including proyect information (e.g.
author, contributors, etc.).