OTM Update version 8.11

This update includes new features in the following areas:

1. Extended configurability of services
2. New service "Post editing"
3. Simplified PayPal payment for customers
4. Partial invoices (payment deadline, status display, messages on the task board)
5. Cash flow forecast

Please view the changelog details at
https://lsp.net/lsp-net-news.html#otm811 (English)
or
https://de.lsp.net/lsp-net-news.html#otm811 (German)