Comment 22 for bug 1705950

ok I created a branch which is working.
had to include all of my buildings to Init.lua of the tribes.
commented out buildcost in most of them making them not buildable (I had to dig a lot in the code to find that out). But this is making them unable to dismantle as well. Which is not undesired in that case. These building had to be added to empire.lua as well.
for two of them I created them as enhancement including only the enhanced one in empire.lua (and only used the enhanced ones in the map). This led them to be dismanteable but not appearing in the menu.
I kicked out the custom workers cause I do not really need them as I found different ways to create my desird effect.
So scenario start point is working. Menu is clean in all games. Couldn't measure any increase in loading time due to the custom entities being part of the tribes data.
Linked the branch to this bug.
Best of all with this solution: I am motivated again to develop the storyline. Any testing and comments on how to start and how to continue the story would be very welcome.