Console: New icons from Sadie

Source: https://github.com/feathericons/feather
Feather is licensed under the MIT License.
https://raw.githubusercontent.com/feathericons/feather/master/LICENSE
All icons converted from SVG to PNG, brightness adjusted, colourized with #848484 and resized
Some are combined and modified

router/java/src/net/i2p/router/RouterVersion.java

@@ -18,7 +18,7 @@ public class RouterVersion {
     /** deprecated */
     public final static String ID = "Monotone";
     public final static String VERSION = CoreVersion.VERSION;
-    public final static long BUILD = 5;
+    public final static long BUILD = 6;
 
     /** for example "-test" */
     public final static String EXTRA = "";