FrostWire 4.18.4

- New: “Tools > Refresh Connections”. A network of FrostWire Sentinels maintains a list of reliable nodes that can be used to bootstrap your connection.
- FrostWire IP BlackList technology updated to get rid of over 70% of spam and fakes (thanks Aaron.Walkhouse).
- Update: latest UPnP code merged from LimeWire Codebase for better connectivity.
- Update: Network core more efficient and stable thanks to the latest Apache HttpComponents (httpcore-4.0.1 and httpclient-4.0)
- Update: Random Splash Screens. Now showing different community submitted Splash Screens to spread the FrostWire culture.
- Update: The Chat Server is now a parameter on frostwire.props.
- Fix: Connection Doctor addresses more connection bootstrapping issues.