Fix Bug 886509: HP Updates For R3 Including Share

* Stubbed out hp share, refactored class to sep js from display.
* Updated macros for R3, added macro for Home.
* Fixed hp copy for r3
* Fixed twitter url
* Added new line at end of macros file

**Notes For PR**
* My approach to the macros may not be correct, please advise.
* If there are better ways to do the flag switching let me know.