Enhaance ImgDialog to allow upload of images

[Jared Jurkiewicz]

Work being done by IBM US (Under David Schwartz) to improve the link dialog to allow upload of images.

[David Schwartz]

This patch provides an Insert Image plugin for the Editor, which includes the following features:

o Insert an online image. o Insert a local image by uploading it at the same time. o Editor the URL and description of an image.

NOTE: you need to enable dojox\form\tests\cLOG.php and dojox\form\tests\UploadFile?.php first to test this plugin.

[Jared Jurkiewicz]

Image Uploader patch

[Jared Jurkiewicz]

The fileset

[Adam Peller]

see #11283