first pass at add content from xforms ui

- added an add content panel to the file picker which enables browsing the local disk to select content to upload.  the file is uploaded without requiring a browser refresh by targeting a hidden iframe.  the server response includes a js call which notifies the form that the upload is complete.
- added annotations to ajax methods to enable specifying the response mime type of the method.  needed for uploadFile which returns html rather than xml
- minor cleanup in schemaformbuilder
- added mapping between xsl-fo mimetypes and those in mimetype map


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@4576 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/bean/wcm/AVMEditBean.java

@@ -233,7 +233,7 @@ public class AVMEditBean
       {
          private final FormsService ts = FormsService.getInstance();
 
-         public Document getContent()
+         public Document load()
          { 
             try
             {
@@ -247,7 +247,8 @@ public class AVMEditBean
             }
          }
          
-         public void setContent(final Document d)
+         public void save(final Document d,
+                          final String[] uploadedFilePaths)
          {
             AVMEditBean.this.setEditorOutput(this.ts.writeXMLToString(d));
          }