fix some text missing (FOTS)

barracks now improve 5% reload speed for infantry units (SHO)

Fix the problem that regional specialties are missiong from the upgrade tree. (FOTS)

FOTS support

As previous versions, you won't get resources from the specialty built in normal slot.

Railways are not available cuz Idk if this will need map modification and I don't really have time to test it.

thanks @KardaKAX and @♥valky_kitten♥ @kinglegbiter for suggestions

Add Support for ROS. (but I forgot the fraction unique building, will fix in next update)
Now all regional specialty buildings can be built in normal slot except for gold mine.
Adjust building effect of construction site to encourage AI to build it. I can't find any AI building additional bulidings, hope this will fix it.
BTW, I do have plan to support FOS but I need advise on which tech should be the required tech for new buildings. FOS tech tree is asymmetric and I'm not familiar with it. I also need suggestion or contribution on the icon of FOS construction site. The style from origional game seems not fit.

Initial release