Fixed broken links to nifty docs.

src/docs/asciidoc/jme3/advanced/nifty_gui.adoc

@@ -77,7 +77,7 @@ Nifty GUIs are made up of the following *elements*:
 
 Learn more from the NiftyGUI page:
 
-*  link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual]
+*  link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual]
 *  link:https://github.com/nifty-gui/nifty-gui/wiki[Nifty GUI - Wiki]
 *  link:http://nifty-gui.sourceforge.net/projects/1.4.2/nifty/nifty/apidocs/index.html[Nifty 1.4.2 JavaDoc]
 *  link:http://nifty-gui.sourceforge.net/projects/1.4.2/nifty/nifty-default-controls/apidocs/index.html[Nifty 1.4.2 Controls JavaDoc]

src/docs/asciidoc/jme3/advanced/nifty_gui_best_practices.adoc

@@ -7,7 +7,7 @@
 ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 
 
-This page is a short list of best practices that you should know of when starting to use Nifty +++<abbr title="Graphical User Interface">GUI</abbr>+++. The JME3 tutorials focus on JME3-Nifty integration related details. You will find more features in the link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI Manual].
+This page is a short list of best practices that you should know of when starting to use Nifty +++<abbr title="Graphical User Interface">GUI</abbr>+++. The JME3 tutorials focus on JME3-Nifty integration related details. You will find more features in the link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI Manual].
 
 .  <<jme3/advanced/nifty_gui#,Nifty GUI Concepts>>
 .  *Nifty +++<abbr title="Graphical User Interface">GUI</abbr>+++ Best Practices*

src/docs/asciidoc/jme3/advanced/nifty_gui_java_interaction.adoc

@@ -155,7 +155,7 @@ nifty.addScreen("start", new ScreenBuilder("start") {{
 
 Now the Java class `MyStartScreen` and this +++<abbr title="Graphical User Interface">GUI</abbr>+++ screen (`start`) are connected. For this example you can also connect the `hud` screen to MyStartScreen.
 
-See also: link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Elements (Screen Controller)]
+See also: link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Elements (Screen Controller)]
 
 == Make GUI and Java Interact
 
@@ -351,5 +351,5 @@ For this to work, there already needs to be a (possibly inactive) `<interact />`
 You're done with the basic Nifty +++<abbr title="Graphical User Interface">GUI</abbr>+++ for jME3 tutorial. You can proceed to advanced topics and learn how add controls and effects:
 
 *  <<jme3/advanced/nifty_gui_scenarios#, Nifty GUI Scenarios>>
-*  link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual]
+*  link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual]
 *  link:https://github.com/nifty-gui/nifty-gui/wiki/Controls[Controls] 

src/docs/asciidoc/jme3/advanced/nifty_gui_java_layout.adoc

@@ -363,7 +363,7 @@ image::jme3/advanced/nifty-gui-panels.png[nifty-gui-panels.png,width="",height="
 
 == Adding Content to Panels
 
-See also link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Layouts] on the Nifty +++<abbr title="Graphical User Interface">GUI</abbr>+++ site.
+See also link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Layouts] on the Nifty +++<abbr title="Graphical User Interface">GUI</abbr>+++ site.
 
 
 === Add Images
@@ -579,7 +579,7 @@ Nifty additionally offers many customizable controls such as check boxes, text f
 
 See also:
 
-*  link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Elements]
+*  link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Elements]
 *  link:https://github.com/nifty-gui/nifty-gui/wiki/Controls[Controls]
 
 == Intermediate Result

src/docs/asciidoc/jme3/advanced/nifty_gui_scenarios.adoc

@@ -153,7 +153,7 @@ a| looks up `key` in the Nifty properties. Use Nifty.setGlobalproperties(propert
 
 |===
 
-See also: link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: XML GUI (Special XML Markup)]
+See also: link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: XML GUI (Special XML Markup)]
 
 
 == Use ScreenControllers for Mutally Exclusive Functionality
@@ -198,7 +198,7 @@ Here is an example that moves a panel when the startScreen opens. You place an &
 
 Learn more from the NiftyGUI page:
 
-*  link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Effects]
+*  link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Effects]
 *  link:https://github.com/nifty-gui/nifty-gui/wiki/Effects[Effects] 
 
 

src/docs/asciidoc/jme3/advanced/nifty_gui_xml_layout.adoc

@@ -190,7 +190,7 @@ image::jme3/advanced/nifty-gui-panels.png[nifty-gui-panels.png,width="",height="
 
 == Adding Content to Panels
 
-See also link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Layouts] on the Nifty +++<abbr title="Graphical User Interface">GUI</abbr>+++ site.
+See also link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Layouts] on the Nifty +++<abbr title="Graphical User Interface">GUI</abbr>+++ site.
 
 
 === Add Images
@@ -220,7 +220,7 @@ The link:https://github.com/jMonkeyEngine/wiki/blob/master/src/docs/images/jme3/
 
 ----
 
-In order to make the hud-frame.png independent of the screen resolution you are using, you could use the `imageMode` attribute on the image element link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Images (ImageMode=resize)].
+In order to make the hud-frame.png independent of the screen resolution you are using, you could use the `imageMode` attribute on the image element link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Images (ImageMode=resize)].
 
 [source,xml]
 ----
@@ -409,7 +409,7 @@ Nifty additionally offers many customizable controls such as check boxes, text f
 
 See also:
 
-*  link:https://versaweb.dl.sourceforge.net/project/nifty-gui/nifty-gui/1.3.2/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Elements]
+*  link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/nifty-gui-the-manual-1.3.2.pdf[Nifty GUI - the Manual: Elements]
 *  link:https://github.com/nifty-gui/nifty-gui/wiki/Controls[Controls]
 
 == Intermediate Result