Prevent last column on Tree page from wraping

With localizations, there can be longer text then 13em so there is a line break.
This fix prevent this line breaking and thus every line has normal height again.
diff --git a/src/main/resources/gitblit.css b/src/main/resources/gitblit.css
index 10c9a0e..5dabbec 100644
--- a/src/main/resources/gitblit.css
+++ b/src/main/resources/gitblit.css
@@ -1963,6 +1963,7 @@
 td.treeLinks {

 	text-align: right;

 	width: 13em;

+	white-space: nowrap;

 }

 

 span.help-inline {