Invoicing Process Implementation

[mariobehling]

Implement the invoice process as follows:

1. On the first of the month an invoice gets generated as a PDF in the invoice area of event organizers account. Organizer Invoice Generation HTML to PDF template #5120
   a) This only includes organizers who run an active event (not other users or organizers who do not have an event "live").
   b) And this includes organizers whose event is finished in the billing cycle.
2. The organizers with live events or events that finished in the billing cycle get an email with a link to the invoice page Invoices: Add invoice and reminder emails to platform #5147.
3. On the invoice page is a button "pay now with paypal or stripe"
4. Organizers should click there and pay. The invoice tag on the table changes to "Paid" after the payment.
5. 14 days after the invoice organizers who have not paid yet receive a "Friendly Reminder: Please pay within 15 days" Invoices: Add invoice and reminder emails to platform #5147
6. 27 days after the invoice organizers who have not paid yet receive a "Reminder: Please pay within 2 days." Invoices: Add invoice and reminder emails to platform #5147
7. After that add a past due email to be sent out after 30 days. Invoices: Add invoice and reminder emails to platform #5147
8. The admin account should receive invoice mails in BCC.

[iamareebjamal]

All points completed, so closing