AddThis - Implement AddThis feature in the MyCurriki Blog

This is part 3. of the spec. http://www.curriki.org/xwiki/bin/view/Project/MetricsSpecs

3. Implement the AddThis feature in the My Curriki Blogs footer
a. Change the name of the "Email" link to "Share" (Trans update)
b. Maintain existing rules for when the "Email" link appears to members vs visitors
c. When a user hovers or clicks on the "Email" link in footers for News articles or Blogs, they should be able to utilize the AddThis feature

Blog = Here is an example. http://www.curriki.org/xwiki/bin/view/MyCurriki/Blog?user=ShermanTank

Note: Chrissie will make all Trans changes.