allow reportbooru to update post counts

app/controllers/related_tags_controller.rb

@@ -16,6 +16,7 @@ class RelatedTagsController < ApplicationController
     @tag = Tag.find_by_name(params[:name])
     @tag.related_tags = params[:related_tags]
     @tag.related_tags_updated_at = Time.now
+    @tag.post_count = params[:post_count] if params[:post_count].present?
     @tag.save
     head :ok
   end

app/models/tag.rb

@@ -814,6 +814,7 @@ class Tag < ApplicationRecord
         self.related_tags = RelatedTagCalculator.calculate_from_sample_to_array(name).join(" ")
       end
       self.related_tags_updated_at = Time.now
+      fix_post_count if rand(post_count) <= 1
       save
     rescue ActiveRecord::StatementInvalid
     end