Dll changes for up coming Civics Screen
Added Python Files and Control code for New Civics Screen
Added Civics.py and top button art
New Food Consumption Caculator. Units can be configured to consume more or less food.
Updated git ignore
Civic Effect: Random chance Growth Unit will be specified XML unit(s)
Merge branch 'Civics_Screen' of https://github.com/Nightinggale/Medieval_Tech into Civics_Screen
Civic Effect: Bonus Yields per connected Trading Post or Mission. Added Game Text for this and Growth Units in Pedia
Civic Effect: Missionaries not consumed finished. Use iMissionariesNotCosumed tag, set to -1 for missionaries to appear after first convert, or positive number for Turns to wait till Unit reappears. Fixed some xml errors. Added initial civics to applicable Civs.
Civic Effect: added AllowsUnitClassImmigration and made immigrant number able to go down

Adds the ability to turn on and off if a UnitClass should appear on the dock
    Default is always allowed
    No unit can appear on the dock unless it is also allowed by AllowsUnitClasses

iIncreasedImmigrants is now able to go both up and down
    This allows civics to gain a bonus, which can be removed again
    When removing units on the dock, it starts from the right

resolves #8
Civic Effect: Traders are consumed on establishing Trade Posts, Free Market returns Traders after specified turns. Fixed issue with Missionary Consumed Civic.
Merge branch 'Civics_Screen' of https://github.com/Nightinggale/Medieval_Tech into Civics_Screen

Conflicts:
	Assets/CvGameCoreDLL.dll
Cleanup: CvPlayer::updateInventionEffectCache()

Closes #13
Civic Effect: Extra Hunting Yield which this Civic set in Professions.xml
Merge branch 'Civics_Screen' of https://github.com/Nightinggale/Medieval_Tech into Civics_Screen

Conflicts:
	Assets/CvGameCoreDLL.dll
Civic Effect #6 Bonus to Father Points
index on Civics_Screen: 82a7e4e Civic Effect #6 Bonus to Father Points
On Civics_Screen: Civics Effect Workers Move
Temporary fix for Infinite Unit Loop
Civics Effect: Workers can Build after Move

Merge commit '9b7be07167a7f759345ba0d2f9be7069aee23061' into Civics_Screen

Conflicts:
	Assets/CvGameCoreDLL.dll