more unit tests for parseSignedlist. Fixing some bugs in spojCrawler and charge crawler order to bfs.
	new file:   crawler/crawler/dataExtractor/testData.txt
	new file:   crawler/crawler/dataExtractor/testData1.txt
	modified:   crawler/crawler/dataExtractor/signedlistParser.py
	modified:   crawler/crawler/pipelines.py
	modified:   crawler/crawler/settings.py
	modified:   crawler/crawler/spiders/spojCrawler.py