Merge branch 'master' of https://github.com/Gp2mv3/Syntheses
Merge branch 'master' of https://github.com/Gp2mv3/Syntheses
Merge branch 'master' of https://github.com/Gp2mv3/Syntheses
Merge branch 'master' of https://github.com/Gp2mv3/Syntheses
Merge branch 'master' of https://github.com/Gp2mv3/Syntheses
fix ortho
Merge branch 'master' of https://github.com/Gp2mv3/Syntheses
Merge branch 'master' of https://github.com/Gp2mv3/Syntheses
Merge branch 'master' of https://github.com/Gp2mv3/Syntheses
add babel to tikzlibrary

To prevent problems btw french babel and tikz packages
small correction in math q3
Merge pull request #108 from jdewasseige/master

correction in math q3 + add package in elec q1 + spelling