Making the width of the left navcolumn adjustable via a property.

${maven.ui.navcol.width} now defaults to 20% and replaces a hardcoded
20% in the site.jsl.  With the new hierarchic expanding navigation,
it can get pretty wide when pushed to its limits.


git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@114314 13f79535-47bb-0310-9956-ffa450edef68

xdoc/src/plugin-resources/site.jsl

@@ -143,7 +143,7 @@
         <!-- Body of the page -->
         <table border="0" cellspacing="0" cellpadding="8" width="100%"> <!--id="main" -->
           <tr valign="top">
-            <td id="leftcol" width="20%">
+            <td id="leftcol" width="${maven.ui.navcol.width}">
               <div id="navcolumn">
                 <j:if test="${date == 'navigation-top'}">
                   <div>