Accept submissions with embeddable images

[aguywithanidea]

The server now accepts doc and docx files with embedded images. In the raw HTML those images display properly. But when processed through TIDY, they do not.

Need to update a combination of the server and the plugin to to ensure that embedded images are viewable in submissions and that when imported into WP they still continue to function (as the image paths are relative and would need to be either downloaded to WP, or fully pathed in the source doc).

Additionally tables and background coloring are stripped by TIDY. May want to control this at a submission level, rather than publisher level.