Remove dialog that was used to build the weighting tree
Don't attempt to calculate the SVI if there are no indicators or empty themes
Allow using the d3 weighting tree for vector layers for which the project definition wasn't constructed (use default template in case)
Remove the stuff related to weight tree dialog that were still there
Fix copyright year, typos, minor details
Add calculation of the Risk Index and fix the calculation of the Integrated Risk Index
Put field name inside the corresponding node instead of adding attributes to the root node