Пакет nagwad-actions: Информация

- Fixed documentation (signal.md):
  -- replace '.cnf' with '.cfg' (thx vercha@);
  -- added "nagstamon" package to the server list (thx nbr@).

- Use root@$ADDRESS$ for the Lock_host action.
- Produce and install signal.html.
- Updated the README.
- Added signal.md (and html) --- the manual in Russian.

- Fixed quotation in NSCA shell action.
- Fixed OSEC regular expression for Nagwad.