Change "help" to display categories/module list then "help <category/module>" to display commands in a category.

This is to deal with the hundred lines of command splurge when one previously typed "help"
Modelled somewhat on the mysql console
One can still type help <command> to get per command help at any point.
Categories capitalized to avoid conflict with the all-lowercase commands (except for commander system, as of yet).
Does not affect command parsing or any other aspects of the console apart from the help system.
Backwards compatible with existing modules.

OpenSim/Region/CoreModules/Framework/Caps/CapabilitiesModule.cs

@@ -69,9 +69,10 @@ namespace OpenSim.Region.CoreModules.Framework
         {
             m_scene = scene;
             m_scene.RegisterModuleInterface<ICapabilitiesModule>(this);
-            MainConsole.Instance.Commands.AddCommand("Capabilities", false, "show caps",
+
+            MainConsole.Instance.Commands.AddCommand("Comms", false, "show caps",
                 "show caps",
-                "Shows all registered capabilities", HandleShowCapsCommand);
+                "Shows all registered capabilities for users", HandleShowCapsCommand);
         }
 
         public void RegionLoaded(Scene scene)

OpenSim/Region/CoreModules/Framework/Monitoring/MonitorModule.cs

@@ -72,7 +72,7 @@ namespace OpenSim.Region.CoreModules.Framework.Monitoring
 
             m_scene = scene;
 
-            m_scene.AddCommand(this, "monitor report",
+            m_scene.AddCommand("General", this, "monitor report",
                                "monitor report",
                                "Returns a variety of statistics about the current region and/or simulator",
                                DebugMonitors);

OpenSim/Region/CoreModules/Framework/UserManagement/UserManagementModule.cs

@@ -80,7 +80,7 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
             //        }
             //    }
             //}
-            MainConsole.Instance.Commands.AddCommand("grid", true,
+            MainConsole.Instance.Commands.AddCommand("Users", true,
                 "show names",
                 "show names",
                 "Show the bindings between user UUIDs and user names",