Purge the FileReader class and clean up modules that used it.

- m_ssl_gnutls will now no longer give cryptic "base64 decoding"
  errors when it can't load a .pem file.
- m_randquote has been cleaned up massively and the RANDQUOTE
  command has been removed.
Merge pull request #539 from SaberUK/master+purge-filereader

Purge the FileReader class and clean up modules that used it.