fix query for find users by events and payment status for mail
Merge pull request #178 from lensky84/13532_fix_newsletters

fix query for find users by events and payment status for mail
fix add users script for admin
Merge pull request #181 from lensky84/fix_admin_add_users_script

fix add users script for admin
changed tickets field show on payment list page and fix edit payment (add/remove tickets)
Merge pull request #182 from lensky84/13643_fix_manual_add_participants_script

changed tickets field show on payment list page and fix edit payment (ad...