Modify the CKEditor image dialog to use the new wrapper form for "file/add" and "Media Library Selector" mechanisms

This relates to File entity and re-usable managed files system #1448

When other tasks are complete, we'll want to modify the form the CKEditor image dialog uses when adding a new image to content.

Expected:

When a user does not have an image selected in CKEditor and clicks the Image dialog button, they are presented with the new wrapper form where they can either upload a new file or select an existing one.

When a user has an image selected in CKEditor and clicks the Image dialog button, they are presented with options for modifying how that image is displayed within the content. Such as alt text, title, image style, image size, etc.