add links to topics

docs/modules/ROOT/pages/jme3.adoc

@@ -9,11 +9,6 @@ ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 
 === Graphical User Interface
 
-*  link:https://github.com/jMonkeyEngine-Contributions/Lemur[Lemur - a native jME3 GUI library with scene graph tools]
-*  <<jme3/contributions/tonegodgui#,tonegodGUI - a native jME3 GUI library>>
-*  <<jme3/advanced/nifty_gui#,Nifty GUI - JME3 Integration Tutorial>>
-*  <<jme3/advanced/nifty_gui_best_practices#,Nifty GUI - Best Practices>>
-*  <<jme3/advanced/nifty_gui_scenarios#,Nifty GUI Scenarios (Load Screen etc)>>
 *  <<jme3/advanced/hud#,Head-Up Display (HUD)>>
 *  <<jme3/advanced/localization#,Localization>>
 *  <<jme3/advanced/swing_canvas#,Swing Canvas>>
@@ -63,6 +58,10 @@ ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 ***  link:http://hub.jmonkeyengine.org/t/lemur-gems-2-inputmapper-delegates/28710[Lemur Gems #2 - Input mapper delegates]
 ***  link:http://hub.jmonkeyengine.org/t/lemur-gems-3-scene-picking/28713[Lemur Gems #3 - Scene picking]
 
+== gui
+*  link:https://github.com/jMonkeyEngine-Contributions/Lemur[Lemur - a native jME3 GUI library with scene graph tools]
+*  <<jme3/contributions/tonegodgui#,tonegodGUI - a native jME3 GUI library>>
+
 === Sample Projects
 
 *  link:http://code.google.com/p/jmonkeyengine/source/browse/BookSamples/#BookSamples%2Fsrc[BookSamples] – Some more jME3 code samples

docs/modules/core/nav.adoc

@@ -56,7 +56,12 @@
 *** xref:renderer/making_the_camera_follow_a_character.adoc[Follow a Character]
 *** xref:renderer/remote-controlling_the_camera.adoc[Remote-Controlling]
 *** xref:renderer/multiple_camera_views.adoc[Multiple Camera Views]
-** I/O
+** User Interaction
 *** xref:input/input_handling.adoc[Input Handling]
 *** xref:input/combo_moves.adoc[Combo Moves]
 *** xref:input/mouse_picking.adoc[Mouse Picking]
+** Graphical User Interface
+*** Nifty GUI
+**** xref:gui/nifty_gui.adoc[Integration Tutorial]
+**** xref:gui/nifty_gui_best_practices.adoc[Best Practices]
+**** xref:gui/nifty_gui_scenarios.adoc[Scenarios (Load Screen etc)]