Added Reference & Block

Added a reference in CAT and a block in CEG of Beyond the future
CSD Visual fix

The mod uses a Specialist called a 'Civil servant' that CAT lacked a
defined icon for. This fix just reuses the Great Merchant icon.
Spelling error
Artistic Genius fix

Artistic Genius should now grant +25% bonus to Great (Cultural) People
CanConstruct fix

Set Cost = -1 instead of 0 so player:CanConstruct runs correctly. Also
added extra check so all non-positive Costs are automatically set to -1.
Merge remote-tracking branch 'origin/new-features' into stable
Barbarians, wonders, start bonuses
Partial golden age fix

This should activate +20% modifiers on Production, Golden, and Science during Golden Ages. The rest will need the YieldLibrary.lua
Camps on Marshes fix

PrereqTech TECH_BRONZE_WORKING for BUILD_CAMP on FEATURE_MARSH.
Promotion Allotment fix

Added description to promotion allotment.
debug info added to cityview.lua

Small print statement added to make it easier to track down
incompatibility problems with other mods using the file, e.g. CSD
Merge pull request #169 from skodkim/stable

debug info added to cityview.lua
Trade Office fix

Recent global change to the caravan figures nerfed the Dutch UB to be
just another caravansary. This makes a 100% increase to the different
values of each type of "caravansary" building.
Trade Office fix #2

Adjusted the actual defining code to show the desired 50% increase over
the vanilla
Removed CityDefense

Removed CityDefense from AI handicap. Caused too many one-shot kills.
Wonder descriptions

Just to update them until the tooltip writer takes over
GP yield modifiers compatibility with CSD

BUILDING_JADE_HALL now gives Science and BUILDING_HAGIA_SOPHIA Faith if
USING_CSD=1
Feature tweaks

Reefs & isles are now -10 to defense (limited manoeuvrability)
both are +2 Movement and isles can now be seen over (the landmasses next
to them are higher and can be seen over).
Update Changelog.md

misplaced 'e'
Philantropy policy changes if CSD is active

-Moved effects to sql with check for USING_CSD
-New effect if USING_CSD is active: +1 happiness from
BUILDINGCLASS_SCRIBE and no influence from gold gifts
-Text in CSD.sql works now