Merge pull request #115 from Phyks/dev

Fully functional cookies to store folders status
remove mails and link to github contributors page
verbose feeds support
rss adress added
visibility
Multiple plugins' authors handling
fix for #116
Show the author's mail plugin only if is set
In relation with https://github.com/ldleman/Leed/pull/372 .
Remove useless single plugin's author case and use of new getAddress method instead of getMail
Merge pull request #117 from Simounet/feature/plugins-authors-handler

Multiple plugins' authors handling
Fixed forgotten semi-colons in JS