Big code reorganization and cleanup was done. A lot of code was moved to a new file AstroMosaicEngine.js.

AstroMosaicEngine.js allows embedding Astro Mosaic without Iframe by calling AstroMosaicEngine function directly. It has a function AstroMosaicEngine for embedding target and/or graph views on a page. There is a new AstroMosaicEngineExample.html file.