bug fix for migration of clickoptions during upgrade
Unquoted Constant, Undefined Variables, Index, Initialization - PHP Notices fixed

All from:
referer: http://openemr.example.com/interface/main/left_nav.php

Undefined index: mode in /var/www/openemr/interface/billing/billing_report.php on line 28
Undefined index: mode in /var/www/openemr/interface/billing/billing_report.php on line 54
Undefined index: authorized in /var/www/openemr/interface/billing/billing_report.php on line 71
Use of undefined constant html_header_show - assumed 'html_header_show' in /var/www/openemr/interface/billing/billing_report.php on line 104
Undefined variable: all in /var/www/openemr/library/billrep.inc on line 116
Undefined variable: divnos in /var/www/openemr/interface/billing/billing_report.php on line 1110
Missing Parenthesis fixed
Some more PHP Notice Fixes

referer: http://openemr.example.com/interface/main/left_nav.php
in /var/www/openemr/interface/billing/new_payment.php on line :
Fixes:
Undefined variable: payment_id in /var/www/openemr/interface/billing/new_payment.php on line 122
Undefined variable: hidden_patient_code in /var/www/openemr/interface/billing/new_payment.php on line 405
Undefined index: payment_id in /var/www/openemr/interface/billing/new_payment.php on line 122
Undefined index: default_search_patient in /var/www/openemr/interface/billing/new_payment.php on line 407
Undefined index: mode in /var/www/openemr/interface/billing/new_payment.php on line 409
Removed comment as suggested by Brady

https://github.com/apmuthu/openemr/commit/0120ccd1cf62b360c5d88c30d69c74715ca22de6#commitcomment-3101816
Update shared.make_timestamp.php