Add scripts to load polling station and polling district data

scripts/load-polling-district-postcodes.rb

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+require 'csv'
+require './models'
+
+CSV.foreach(ARGV.shift) do |row|
+  pc = row[0].strip
+  puts pc
+  if @postcode = Postcode.get(pc)
+    @postcode.polling_station_id = row[1]
+    @postcode.save
+  else
+    puts "#{pc} not found"
+  end
+end

scripts/load-polling-districts.rb

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+# load polling districts data
+
+require './models'
+require 'csv'
+require 'pp'
+
+DataMapper::Model.raise_on_save_failure = true
+PollingStation.destroy
+
+CSV.foreach(ARGV.shift, :headers => true) do |row|
+  begin
+    @p = PollingStation.create(
+      :id =>        row['District'].strip,
+      :easting =>  row['Eastings'],
+      :northing => row['Northings'],
+      :lat =>       row['lat'],
+      :lng =>       row['lng']
+    )
+  
+    @p.save
+  rescue
+    pp @p
+    # puts p.errors
+  end
+end

scripts/load-polling-stations.rb

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+# load polling stations data (polling-stations.csv)
+
+require './models'
+require 'csv'
+require 'pp'
+
+DataMapper::Model.raise_on_save_failure = true
+
+CSV.foreach(ARGV.shift, :headers => false) do |row|
+  begin
+    if @p = PollingStation.get(row[1])
+      @p.name = row[2]
+      @p.address = row[3]
+      @p.postcode = row[4]
+      @p.save
+    else
+      puts "#{row[1]} not found"
+    end
+  rescue
+    puts @p.saved?
+    pp @p
+    @p.errors.each { |r| puts r }
+  end
+end