Allows Access to All Religions means it will allow you to build missionaries of any type regardless of if you have the proper monastery of even if the religion has spread to your empire.
All the python is labeled 'Golden Dawn'
I recommend downloading and using Winmerge to combine python.
Credits:
XML, python, button: me (tsentom1)
model: taken from FFH2
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NOTE: If your more uses more than the standard 7 religions you need to add the additional ones in.
Edit 1: Fixed the pre-reqs