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