Adds support for hiding navigation when tree is empty

src/Umbraco.Web.UI.Client/src/less/grid.less

@@ -13,7 +13,7 @@ body {
   padding: 0;
   height: 100%;
   width: 100%;
-  
+
   font-family: @baseFontFamily;
   font-size: @baseFontSize;
   line-height: @baseLineHeight;
@@ -109,7 +109,6 @@ body {
   z-index: 100;
   background: @white;
   height: 100%;
-   
 }
 
 .navigation-inner-container{
@@ -119,7 +118,7 @@ body {
     left: 0px;
     right: 0px;
     padding-top: 100px;
-    border-right: 1px solid @grayLight;  
+    border-right: 1px solid @grayLight;
 }
 
 #dialog {
@@ -167,8 +166,13 @@ body {
   border-radius: 0;
 }
 
+
 @media (min-width: 1101px) {
   #contentwrapper {left: 440px;}
   #speechbubble {left: 360px;}
 }
 
+//empty section modification
+.emptySection #contentwrapper {left: 80px;}
+.emptySection #speechbubble {left: 0;}
+.emptySection #navigation {display: none}