Added rectangles and Ellipse to graph nodes. Code modified to view saved nodegraph.svg in image-viewer.
Merge pull request #286 from Dhiru/mongokit

inclusion of relation in custom app
Merge pull request #287 from kedar2a/mongokit

Added rectangles and Ellipse to graph nodes. Code modified to view saved nodegraph.svg in image-viewer.
Addition of GAttribute and GRelation inadmin data module
add default fiedls tags and content