adding support for wcm tinymce extensions to create html from web content wizard

- extracted file picker backing code into its own bean
- refactoring for to extract file picker bean
- refactoring to manage uploads from file picker outside of xforms context
- added some language utility methods to common.js
- refactored extension dialogs to deal with quirkyness of tinymce dialog codebase on IE - mostly works now and addressed bug WCM-471
- resourcifying a couple strings i missed in filepickerbean

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5675 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/web/scripts/ajax/tiny_mce_wcm_extensions.js

@@ -106,7 +106,7 @@ function alfresco_TinyMCE_execcommand_callback(editor_id, elm, command, user_int
 
     var window_props = { file: alfresco.constants.WEBAPP_CONTEXT + "/jsp/wcm/tiny_mce_link_dialog.jsp",
                          width: 510 + tinyMCE.getLang('lang_insert_link_delta_width', 0),
-                         height: 400 + tinyMCE.getLang('lang_insert_link_delta_height', 0) };
+                         height: 265 + tinyMCE.getLang('lang_insert_link_delta_height', 0) };
     var dialog_props = { href: href, 
                          target: target, 
                          title: title, 
@@ -201,7 +201,7 @@ function alfresco_TinyMCE_execcommand_callback(editor_id, elm, command, user_int
 
     var window_props = { file: alfresco.constants.WEBAPP_CONTEXT + "/jsp/wcm/tiny_mce_image_dialog.jsp",
                          width: 510 + tinyMCE.getLang('lang_insert_image_delta_width', 0),
-                         height: 400 + (tinyMCE.isMSIE ? 25 : 0) + tinyMCE.getLang('lang_insert_image_delta_height', 0) };
+                         height: 265 + (tinyMCE.isMSIE ? 25 : 0) + tinyMCE.getLang('lang_insert_image_delta_height', 0) };
     var dialog_props = { src: src, 
                          alt: alt, 
                          border: border,