Now there are no columns with repetitive information

When the frontend tries to delte a person and the request fails a message is shown to notify the user.

Now the name and surname of the person who owns the pet is displayed instead of its id.
To do this, we have included the getPeople method in the people dao to obtain the information of a specific person and thus obtain the name and surname to be shown in the table.

- It has been added to restart the form after deleting a row.
- Permits have been introduced to the rest resources

When the frontend tries to recover people list and the request fails a message is shown to notify the user.