Update API docs
Update API docs

Add `friendica/notification` and `friendica/notification/seen` endpoints

Fix some list rendering issues

Move all `friendica/*` endpoints under "Implemented API calls (not compatible with other APIs)" section

Add info about permitted HTTP methods and required auth

friendica/friendica,fabrixxm/friendica,friendica/friendica,tobiasd/friendica,tobiasd/friendica,annando/friendica,friendica/friendica,friendica/friendica,fabrixxm/friendica,dissolve/friendica,dissolve/friendica,annando/friendica,tobiasd/friendica,fabrixxm/friendica,annando/friendica,annando/friendica,friendica/friendica,dissolve/friendica,fabrixxm/friendica,dissolve/friendica,tobiasd/friendica,dissolve/friendica,tobiasd/friendica,fabrixxm/friendica,annando/friendica