This patch is a follow-up to D2999/rP24541.
The unlock shared vision and unlock shared dropsites technologies do not really affect markets, tribute, barter, or traders, therefore these two technologies do not belong there.
This patch moves this two technologies from the market to the civic centre instead, which already has the conceptually somewhat similar unlock spies and counterespionage technologies. As a consequence:
- The unlock shared vision and unlock shared dropsites are available at game start, making it easier for allies to cooperate, improving team games.
- If at some point a civ (e.g. cart) gets a discount on market technologies as a civ bonus, then these two technologies are no longer discounted too.