Add 'showlayercontrol' config setting and URL parameter, to allow hide of layer control

src/main/java/org/dynmap/ClientConfigurationComponent.java

@@ -25,6 +25,7 @@ public class ClientConfigurationComponent extends Component {
                 s(t, "sidebaropened", c.getString("sidebaropened", "false"));
                 s(t, "dynmapversion", plugin.getDescription().getVersion());
                 s(t, "cyrillic", c.getBoolean("cyrillic-support", false));
+                s(t, "showlayercontrol", c.getBoolean("showlayercontrol", true));
                 String sn = plugin.getServer().getServerName();
                 if(sn.equals("Unknown Server"))
                     sn = "Minecraft Dynamic Map";

src/main/resources/configuration.txt

@@ -242,12 +242,12 @@ showplayerfacesinmenu: true
 joinmessage: "%playername% joined"
 quitmessage: "%playername% quit"
 spammessage: "You may only chat once every %interval% seconds."
-# webprefix and websuffix support using '&color;' as escape code for color code (deprecated: use webmsgformat)
-#webprefix: "&color;2[WEB] "
-#websuffix: "&color;f"
 # format for messages from web: %playername% substitutes sender ID (typically IP), %message% includes text
 webmsgformat: "&color;2[WEB] %playername%: &color;f%message%"
 
+# Control whether layer control is presented on the UI (default is true)
+showlayercontrol: true
+
 # Enable checking for banned IPs via banned-ips.txt (internal web server only)
 check-banned-ips: true
 
@@ -257,7 +257,7 @@ defaultworld: world
 defaultmap: flat
 
 # Option to enable workaround for incorrectly encoded unicode in Cyrillic MC/Bukkit (not good for other code pages)
-#cyrillic-support: true
+cyrillic-support: false
 
 # NOTE: the 'templates' section is now found in the 'templates' directory
 #  Templates CAN still be defined in configuration.txt, as before 0.20