FEATURE: Skip batches if all records exist

Update all import scripts to take advantage of all_records_exist?

script/import_scripts/bbpress.rb

@@ -85,6 +85,8 @@ class ImportScripts::Bbpress < ImportScripts::Base
 
       break if results.size < 1
 
+      next if all_records_exist? :posts, results.map {|p| p["id"].to_i}
+
       create_posts(results, total: total_count, offset: offset) do |post|
         skip = false
         mapped = {}