Add Hierarchical complexity vars to world map

[edwardchalstrey1]

This PR:

• Adds the Hierarchical Complexity variables to the world map with a color range from blue to red
• Reorders the variable lists by alphabetical order

Details:

• Refactor such that settlement_hierarchy_from and settlement_hierarchy_to are instead a list called settlement_hierarchy and the same for the other vars
• Make sure this line is modified to account for a list:
  • shape.settlement_hierarchy_from = JSON.parse(shape.settlement_hierarchy.replace(/'/g, '"'));
• Get the max values of the hierarchical complexity vars from python
• Update the hierarchicalComplexityColourMapping so it's a continuous scale of the appropriate range (figure out what this is)
• Calculate the shapeColour for Hierarchical complexity variables using the average of the from and to
• Account for polities where the variable is not set with the uncoded colour
• Ensure the legend reflects the colours
• Make sure the hierarchical variables are named properly in the variables list
• Refactor highest values to use a dict
• Make the legend always remain when settings open except for globe view

Settlement hierarchy: 0-8
Religious level: 0-10
admin: 0-20
military: 0-24