Remove eval from remote_census_api

The use of eval is a serious security risk, so we change by JSON.parse method

lib/remote_census_api.rb

@@ -84,7 +84,7 @@ class RemoteCensusApi
     end
 
     def request(document_type, document_number, date_of_birth, postal_code)
-      structure = eval(Setting["remote_census.request.structure"])
+      structure = JSON.parse(Setting["remote_census.request.structure"])
 
       fill_in(structure, Setting["remote_census.request.document_type"], document_type)
       fill_in(structure, Setting["remote_census.request.document_number"], document_number)
@@ -100,12 +100,11 @@ class RemoteCensusApi
 
     def fill_in(structure, path_value, value)
       path = parse_path(path_value)
-
       update_value(structure, path, value) if path.present?
     end
 
     def parse_path(path_value)
-      path_value.split(".").map { |section| section.to_sym } if path_value.present?
+      path_value.split(".") if path_value.present?
     end
 
     def update_value(structure, path, value)