Update contributions.adoc

Fixed menu for tip.
Floated text to left of images.
Fixed remaining broken links.

src/docs/asciidoc/jme3/contributions.adoc

@@ -13,7 +13,7 @@ The following list contains additional content for jMonkeyEngine 3 contributed b
 
 [TIP]
 ====
-To install a jMonkeyEngine SDK plugin, go to Tools→Plugins→Available Plugins. +
+To install a jMonkeyEngine SDK plugin, go to `menu:Tools[Plugins>Available Plugins]`. +
 (Currently only jME 3.0 stable SDK, jME 3.1 stable does not yet support plugins)
 ====
 
@@ -60,7 +60,8 @@ These are premade classes/functionalities that you can use.
 
 A fairly complete set of painting tools for editing jME3 Images from code
 
-image::http://i.imgur.com/NYtSC.jpg[NYtSC.jpg,width="150",height="",align="right"]
+[.right.text-left]
+image::http://i.imgur.com/NYtSC.jpg[NYtSC.jpg,width="150",height=""]
 
 [cols="2", options="header"]
 |===
@@ -69,7 +70,7 @@ a| *Contact person*
 a| link:https://hub.jmonkeyengine.org/users/zarch/activity[zarch] 
 
 a| *Documentation* 
-a| link:https://hub.jmonkeyengine.org/forum/topic/image-painter-plugin-available/24255[Forum Post, full javadoc in plugin] 
+a| link:https://hub.jmonkeyengine.org/t/image-painter-plugin-available/24255[Forum Post, full javadoc in plugin] 
 
 a| *Available as SDK plugin* 
 a| Yes 
@@ -84,7 +85,8 @@ a| No
 
 A Native +++<abbr title="Graphical User Interface">GUI</abbr>+++ Library for JME3
 
-image::http://i.imgur.com/0Ww1xA7.png[0Ww1xA7.png,width="150",height="",align="right"]
+[.right.text-left]
+image::http://i.imgur.com/0Ww1xA7.png[0Ww1xA7.png,width="150",height=""]
 
 [cols="2", options="header"]
 |===
@@ -108,14 +110,14 @@ a| Yes
 
 The “Shaderblow library contains various shader effects, e.g. refraction, particles, forceshields, grayscale and much more.
 
-
-image::sdk/plugin/glass-shader.png[glass-shader.png,width="150",height="",align="right"]
+[.right.text-left]
+image::sdk/plugin/glass-shader.png[glass-shader.png,width="150",height=""]
 
 [cols="2", options="header"]
 |===
 
 a| *Contact person* 
-a| link:http://hub.jmonkeyengine.org/members/mifth/activity[mifth] 
+a| link:https://hub.jmonkeyengine.org/users/mifth/activity[mifth] 
 
 a| *Documentation* 
 a| <<sdk/plugin/shaderblow#,Wiki Page>> 
@@ -158,14 +160,14 @@ a| Yes
 
 A self-contained thread-capable entity system.
 
-
-image::http://i.imgur.com/mQ6Uki9.jpg[mQ6Uki9.jpg,width="150",height="",align="right"]
+[.right.text-left]
+image::http://i.imgur.com/mQ6Uki9.jpg[mQ6Uki9.jpg,width="150",height=""]
 
 [cols="2", options="header"]
 |===
 
 <a| *Contact person*  
-a| Paul Speed (pspeed) 
+a| link:https://hub.jmonkeyengine.org/users/pspeed/activity[Paul Speed (pspeed)] 
 
 <a| *Documentation*   
 <a| <<jme3/contributions/entitysystem#,Wiki Page>>