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
Merge branch 'master' of https://github.com/joomla/joomla-cms into punycode
Add changes from JM