Enhance API docs with FAQs
As a newcomer to ISPConfig I see the remoting_client docs are sparse and the forum has several similar questions. If this ticket is approved, I'll branch from stable-3.1, enhance remoting_client/API-docs/content.html with some FAQs that I see, and will continue to make similar updates to this page and other API docs as I find them.
Examples:
- To get all records for a _get request, use ID -1.
- All parameters must be submitted on every call. Do not assume default values.
- The REST API supports all functions and can be substituted for SOAP examples.