If we can't find a person/party match fallback to the current member

This stops the importer from dying when it encounters the corner case
where we don't have a member record for a person in the right party.
It also means that some votes will be attributed to the incorrect
party, see #110.

Fixes #106
Fixes #107

lib/data_loader/ukraine/vote_events.rb

@@ -37,9 +37,13 @@ def load!
             votes.each do |v|
               party_name = people.party_name_from_id(v["group_id"])
               member = Member.current_on(division.date).find_by(person_id: v["voter_id"], party: party_name) ||
-                       Member.find_by!(person_id: v["voter_id"], party: party_name) # Fallback when current_on isn't quite right
+                       Member.find_by(person_id: v["voter_id"], party: party_name) # Fallback when current_on isn't quite right
+
+              if !member
+                Rails.logger.warn "Couldn't find voter #{v["voter_id"]} in party #{party_name}"
+                member = Member.current_on(division.date).find_by!(person_id: v["voter_id"])
+              end
 
-              vote = division.votes.find_or_initialize_by(member: member)
               if option = popolo_to_publicwhip_vote(v["option"])
                 division.votes.create!(member: member, vote: option)
               end