Added port of the mosaic activity
Merge branch 'mosaic'
Published android beta 0.8
core, replaced QtQuick control 1.2 by 1.1

The 1.2 import is only available in Qt 5.3 beta. This is not a
good idea to force developers on it yet.
core, replaced QtQuick Window 2.2 by 2.0

The 2.2 import is only available in Qt 5.3 beta. This is not a
good idea to force developers on it yet.
Merge branch 'master' of https://github.com/bdoin/GCompris-qt