NIHVIVO-1150 Refactor ImageUploadController authorization-related methods to a separate AuthorizationHelper class so they can be used by other pages too.

Move message in classGroups template to separate template.

webapp/web/templates/freemarker/body/classGroups.ftl

@@ -2,18 +2,13 @@
 
 <#-- List class groups, and classes within each group. -->
 
-<#if message??>
-    <p>${message}</p>
-<#else>
-    <div class="siteMap">
-        <#list classGroups as classGroup>
-            <h2>${classGroup.publicName}</h2>
-            <ul>
-                <#list classGroup.classes as class> 
-                    <li><a href="${class.url}">${class.name}</a> (${class.individualCount})</li>
-    
-                </#list>
-            </ul>
-        </#list>
-    </div>
-</#if>
+<div class="siteMap">
+    <#list classGroups as classGroup>
+        <h2>${classGroup.publicName}</h2>
+        <ul>
+            <#list classGroup.classes as class> 
+                <li><a href="${class.url}">${class.name}</a> (${class.individualCount})</li>
+            </#list>
+        </ul>
+    </#list>
+</div>

webapp/web/templates/freemarker/body/message/message-titled.ftl

@@ -0,0 +1,7 @@
+<#-- $This file is distributed under the terms of the license in /doc/license.txt$ -->
+
+<#-- Standard template to display a message with a title generated from any controller. Keeps this out of individual templates. -->
+
+<h2>${title}</h2>
+
+<#include "message.ftl">