remove file names from the API, client must use identifiers

Signed-off-by: Sébastien Boisvert <sebastien.boisvert.3@ulaval.ca>
remove file names from the public API for maps

Signed-off-by: Sébastien Boisvert <sebastien.boisvert.3@ulaval.ca>
add a method in the explorer

Signed-off-by: Sébastien Boisvert <sebastien.boisvert.3@ulaval.ca>
remove author name from help page

Signed-off-by: Sébastien Boisvert <sebastien.boisvert.3@ulaval.ca>