I finally finished to implement what I had to put in this iteration during my lunch break at work.
I just need to finalize tonight the additional interface for the Building mode and complete the linking to the building process.
After that I will work to debug the interface of the colonization mission, and I will transfer the code of the crude music system I developed in a fork of the source code.
And that will be totally all for it.
On time, this time :)