CYB-293 - Update gems - Rails

https://jira.ets.berkeley.edu/jira/browse/CYB-293
CYB-293 - Update gems - Angular

https://jira.ets.berkeley.edu/jira/browse/CYB-293
CYB-293 - Update gems - Selenium
https://jira.ets.berkeley.edu/jira/browse/CYB-293
Merge pull request #178 from christianv/CYB-293

CYB-293 - Update gems - Rails / Angular / Selenium
CYB-59 Add a CSV export for points

* now uses two Activity records; one for the liker, and one for the poster of the item liked
* 2 new action types:  GetALike, GetADislike
* 'MarkNeutral' is no longer a pseudo-status (it is gone)

https://jira.ets.berkeley.edu/jira/browse/CYB-59