Added new sql table to house parent-child relationships. Altered sql pipeline to upload these. Changed sql pipeline to do bulk uploads. Created graph.py as first test at turning sql data into JSON for tree diagram.

	modified:   app/SiteCrawler/pipelines.py
	modified:   app/SiteCrawler/spiders/myfuncs.py
	new file:   app/graph.py
	modified:   app/sitecrawler.db
	modified:   app/sitecrawler.sql