Issue #604, fix m_dnsbl, broken in accccc212cd4f08a3c5532b1ae7a17e76bac8718
Fix a couple of issues

- Wrong doc for Snomask::GetDescription()
- Incorrect idle time when WHOISing remote users
- String + int = garbage
- Remote MODE commands (user mode changes) being broadcast in addition to being forwarded
- Incorrect revision being shown