#forminput / #autoedit: support POST

[gesinn-it-gea]

Both, #forminput and #autoedit should allow sending form data using POST as an altenative to GET:

POST vs. GET:

• Security: POST is more secure because it does not expose sensitive data in the URL.
• Data Size: POST has no limit on the amount of data that can be sent, whereas GET is limited by the maximum length of a URL.
• Data Type: POST can send binary data and files, whereas GET is limited to plain text.
• Caching: POST requests are not cached, so each request is sent to the server, whereas GET requests can be cached, which can lead to stale data being served.
• Idempotence: POST requests are not idempotent, meaning that each request can create a new resource on the server, whereas GET requests are idempotent and can be repeated without changing the server state.
• Bookmarking: POST requests cannot be bookmarked or shared, whereas GET requests can.
• Back Button: When using POST, the back button may prompt the user to resubmit the form, which can be annoying, whereas GET requests do not have this issue.