FIX: SearchLog: Do not store IP of logged in users

db/migrate/20180521184439_allow_null_ip_search_log.rb

@@ -0,0 +1,13 @@
+class AllowNullIpSearchLog < ActiveRecord::Migration[5.1]
+  def up
+    begin
+      Migration::SafeMigrate.disable!
+      change_column :search_logs, :ip_address, :inet, null: true
+    ensure
+      Migration::SafeMigrate.enable!
+    end
+  end
+
+  def down
+  end
+end