AddThis - Implement AddThis feature in the News / Curriki Blog footer

This is part 4. of the spec. http://www.curriki.org/xwiki/bin/view/Project/MetricsSpecs

4. Implement the AddThis feature in the News/Curriki Blog footer
a. Change the name of the "Link to this Post" link to "Share" (Trans update)
b. Change the name of the "Email" link to "Share" (Trans update)
c. Maintain existing rules for when the links appears to members vs visitors
d. When a user hovers or clicks on either link in footer for News articles or Curriki Blog articles, they should be able to utilize the AddThis feature

http://www.curriki.org/xwiki/bin/view/News/
http://www.curriki.org/xwiki/bin/view/News/ArticleEducationWeekHuntingtheInternetforQuality
http://www.curriki.org/xwiki/bin/view/CurrikiBlog/
http://www.curriki.org/xwiki/bin/view/CurrikiBlog/ArticleTheSearchFindingtheResourcesYouNeedinaSnap

Note: Chrissie will make all Trans changes.