Substituting icon on Range for a bootstrap icon. Closing issue #57

Signed-off-by:Beatriz Rezener <beatrizrezener@gmail.com>
Signed-off-by:João Gabriel <joaogabrieldebrittoesilva@gmail.com>
Signed-off-by:Larissa Rodrigues <larissax55@gmail.com>
Signed-off-by:Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Signed-off-by:Thiago Ribeiro <thiagitosouza@hotmail.com>
Signed-off-by:Vinicius Franco <viniciusf.arantes@gmail.com>