Added option in "Game Rules" to allow construction of "resource specific buildings" to everyone [recommended option],
Reworked equations for trade values and wealth,
Adjusted multiple "numbers".

- reworked and carefully balanced trade routes wealth and wealth increase using designed equations that take into consideration: total number of trade posts, start points and unique provinces trade route passess through (MTR Cleanslate design);
- general files cleanup for future trade routes rework.

Fixed an unintencional evaporation of Iberian trade route.

Minor settlemets fix.

Unimportant localization adjustment.

- finally resolved an issue with Merchant Republics not being able to build trade post buildings with "trade post buildings turned off" rule activated ( jonjowett thx for your assistance );

- slightly lowered trade routes values accross Europe;
- evened up trade routes bonuses accross Europe;
- no more sea tiles trade routes clutter as sea zones don't matter in CK2;
- added new trade post centers in: Tunis (Africa - italian route), Orania (Africa - spanish route), Cyrenaica (Africa - asia minor route), Crete (asia minor route), Dyfed & Gloucester (english route), Iceland & Westrebothia (nordic route);
- removed couple excess trade posts along Andalusian, Italian and Amber trade routes;
- made southern Europe trade routes partialy originate in Africa thus African coastal provinces have actual impact on southern Europe's economy (new starting points in: Muluja, Tunis, Cyrenaica, Alexandria and Antioch);
- turned trade flow from Thessalonike to Messione, Athens to Rhodes and Palermo to Cagliari to go the other way due to new trade starting points in Africa;
- some visual improvements.