Reordered the steps in the registration flow so the Verify Identity step comes before Additional Questions

• This is to avoid further confusion regarding the uploading of sensitive documents by participants. 

Fixed a bug where Admins were unable to delete additional questions when toggling ‘No’ for “Would you like to add your organisation’s own additional questions for your participants?”

Fixed a bug where the capacity limit was not incrementing after a participant registered and paid

• There may be a few seconds delay before the capacity updates. The capacity not incrementing for products with no fee is still an outstanding issue.