Renamed Freemarker macro files. Implemented data input portion of main site admin page in Freemarker.

webapp/web/templates/freemarker/lib/lib-json.ftl

@@ -0,0 +1,13 @@
+<#-- $This file is distributed under the terms of the license in /doc/license.txt$ -->
+
+<#-- Macros for json output -->
+
+<#macro array data>
+[ 
+<#if data??>
+    <#list data as obj>   
+        ${obj.json}<#if obj_has_next>,</#if>
+    </#list>
+</#if>
+]
+</#macro>