Add SpecificSiteScraper
Add linked in scraper
Update PersonalData javadoc
Update PersonalData javadoc
Instantiate ThreadLocals
Add to WebSource
Add toString() for PersonalData
Fix constructors in PersonalData
Create BasicGrabber and Grabber interface
Add more sites to WebSource
Changed personal data key
Added GrabberSiteScraper to compact code
Compacted LinkedInScraper