Attempt to hold peer connections for 1-4 hours instead of 5-60 mins, as the constant disconnections are causing too much data to be sent over and over.

If this proves to not have any significant bad effects on re-orgs, we could consider setting these even higher or even disabling the auto disconnect by default.

src/main/java/org/qortal/settings/Settings.java

@@ -210,9 +210,9 @@ public class Settings {
 	private boolean allowConnectionsWithOlderPeerVersions = true;
 
 	/** Minimum time (in seconds) that we should attempt to remain connected to a peer for */
-	private int minPeerConnectionTime = 5 * 60; // seconds
+	private int minPeerConnectionTime = 60 * 60; // seconds
 	/** Maximum time (in seconds) that we should attempt to remain connected to a peer for */
-	private int maxPeerConnectionTime = 60 * 60; // seconds
+	private int maxPeerConnectionTime = 4 * 60 * 60; // seconds
 	/** Maximum time (in seconds) that a peer should remain connected when requesting QDN data */
 	private int maxDataPeerConnectionTime = 2 * 60; // seconds