Remove old copies of JFacebook, JLinkedin, JOauth1Client
Update JFacebook, JLinkedin and JOauth1Client files
Add index.html files and codes style fixes
Code style fixes
Merge pull request #1189 from elinw/social2

Replace Facebook, Linkedin, and OAuth1 packages.
Update deprecation notices with CMS versions
Correct library doc blocks
Add webdriver system tests for banners, contacts, and weblinks. Thanks
George Wilson.
Add skeleton classes for com_categories to work around inconsistent URL
issue.