P04+ Action de lecture des variables d'environnement

+ nouvelle tentative pour que le commit soit le plus clean possible
Merge pull request #20 from niconil/p04+Action_Lecture_Variables_Environnement

An action to read environment variables
ActionPackData
- minor fixes for the ReadEnvironmentVariable action
Global
- added .qm files to gitignore
Locales
- updated fr_FR translation
Global
- updated CHANGELOG
- updated version number
ActionPackData
- added a missing translation call
Global
- updated year to 2013
Global
- added missing line in CHANGELOG