Add One Education logo

We will use this logo in the boot animation to easily
differenciate the final build from testing builds.

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
Update ini file for XO 4

Add One Education logo to the boot animation.

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
Update ini file for XO 1.75

Replace local repository by au1b remote.

Add One Education logo to the boot animation.

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>