First attemot to force focus on Unix systems, needs test on Win
First attemot to force focus on Unix systems, needs test on Win

rdebroiz/medInria-public,aabadie/medInria-public,NicolasSchnitzler/medInria-public,NicolasSchnitzler/medInria-public,rdebroiz/medInria-public,rdebroiz/medInria-public,NicolasSchnitzler/medInria-public,aabadie/medInria-public,aabadie/medInria-public