/** \brief add an fatal error message to the list
*
* Most of the stuff we consider as "error" is also "fatal" for
* the user as the application will not have the expected result,
* but a fatal message here means that it gets printed directly
/** \brief add an fatal error message to the list
*
* Most of the stuff we consider as "error" is also "fatal" for
* the user as the application will not have the expected result,
* but a fatal message here means that it gets printed directly