Bugfix update to 1.7

• Fixed a bug where concessions could not be removed from classes.
• Fixed a bug which could QE to hang after no printing or emailing options were ticked.
• Searching contacts on postal/sms/email delivery status and opt in/out states fixed.
• Fixed a bug where banking reports were not marking payments as FAILED correctly.
• QE show finished classes tickbox works immediately
• Other Charges in QE now works correctly.
• Fixed a number of issues where records were not updating to the website.