Last minute fixing.
Added apk in git.
Added action executed listener.
Merge branch 'master' of https://github.com/Ostis/Ostis.git

Conflicts:
	src/OstisAndroidApp/src/fr/ece/ostis/actions/base/FollowMeAction.java
Merge branch 'master' of https://github.com/Ostis/Ostis.git