0.12dev: Document the reason for accepting only `POST` requests on `/wiki_render`, and allow `GET` requests from `TRAC_ADMIN` for testing purposes.
0.12dev: Document the reason for accepting only `POST` requests on `/wiki_render`, and allow `GET` requests from `TRAC_ADMIN` for testing purposes.

pkdevbox/trac,pkdevbox/trac,pkdevbox/trac,pkdevbox/trac