Moved the *_CSS_* class in their own (draft) library, since they are not CMS specific.
Fixed self documentation when querying documentation related to a specific resource (uri, uri-template, ..)
Before it was showing only the first found
so if we had
  "/foo" GET -> FOO_GET_HANDLER
  "/foo" POST -> FOO_POST_HANDLER
It was showing only the first, now this is working as expected.
update CMS code due to CMS_CSS_* renaming
Include cms and css into the all-safe.ecf
Display only suggestion for request's method
Fixed assertion that were broken with recent delayed header response.
Changed semantic of put_header_lines and add_header_lines,
Now the arguments are iterable of string (i.e the header line)

The previous features were not used, and were not well named.
So we removed them, and reused the names for adpated implementation.
Fixed default status code for redirection response message object.
Added WSF_STARTS_WITH_AGENT_HANDLER