Merge pull request #53 from chrqls/dev

[#42] Teacher can retake several times the same IQSet
refs #52 Add apk, bump version to 1.0.6 for release, remove ol.d apks.,
bump smile student version
refs #52 Add 0.9.9b4 apk
[#39] Birth of a web app for teachers (session values page)
Merge commit '43e7ac9' into dev