BGE: New Property sensor evaluation types

This patch adds "Less Than" and "Greater Than" evaluation types to the property sensor.
The Wiki Docs modifications http://wiki.blender.org/index.php/User:Lordloki/Doc:2.6/Manual/Game_Engine/Logic/Sensors/Property
Also, I have attached a screenshot and a blend to check.

Reviewers: dfelinto, moguri

Reviewed By: moguri

Differential Revision: https://developer.blender.org/D476

doc/python_api/rst/bge.logic.rst

@@ -507,6 +507,18 @@ Property Sensor
    
    :value: 5
 
+.. data:: KX_PROPSENSOR_LESSTHAN
+
+   Activate when the property is less than the sensor value
+
+   :value: 6
+
+.. data:: KX_PROPSENSOR_GREATERTHAN
+
+   Activate when the property is greater than the sensor value
+
+   :value: 7
+
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 Radar Sensor
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