Add collector for getting a tabbed entry
Remove commented-out test code
Generic scraping of URLs
Converting RSS collector to support generic scraping of entries
Change configuration key strings for regexes
Avoid duplicate scraped URLs. Some renaming as suggested in code review.
Rename CollectorPageSequence to CollectorPseudoRss
Renamed CollectorPageSequence to CollectorPseudoRss
Some minor refactoring as result of code review.
Merge branch 'generalize'

Conflicts:
	src/main/java/gov/pnnl/stucco/collectors/CollectorFactory.java