Add calculator widget

Signed-off-by: Laurent CARON <laurent.caron@gmail.com>
diff --git a/_projectCommon.php b/_projectCommon.php
index 874a2ea..c81d8ec 100644
--- a/_projectCommon.php
+++ b/_projectCommon.php
@@ -65,6 +65,7 @@
 		$Nav->addCustomNav("TextAssist",    "https://wiki.eclipse.org/Nebula_TextAssist", "_self", 2);
 		$Nav->addCustomNav("Tip of the Day",    "https://wiki.eclipse.org/Nebula_TipOfTheDay", "_self", 2);
 		$Nav->addCustomNav("TitledSeparator",    "https://wiki.eclipse.org/Nebula_TitledSeparator", "_self", 2);
+		$Nav->addCustomNav("Calculator",    "https://wiki.eclipse.org/Nebula_Calculator", "_self", 2);
 			
 		
 	$Nav->addNavSeparator("Nebula NatTable", "");