Add space between client names in status text (client)

Before:
Server: version=0.4.10, uptime=190.5, max_lag=0.001, clients={user1,user2,user3,user4,user5,foobar,userplayedminetestthismorning}

After:
Server: version=0.4.10, uptime=190.5, max_lag=0.001, clients={user1, user2, user3, user4, user5, foobar, userplayedminetestthismorning}

src/server.cpp

@@ -4468,7 +4468,7 @@ std::wstring Server::getStatusString()
 			name = narrow_to_wide(player->getName());
 		// Add name to information string
 		if(!first)
-			os<<L",";
+			os<<L", ";
 		else
 			first = false;
 		os<<name;