CLC-4051: Update gems: net-ldap / signet / icalendar / foundation-rails / therubyrhino / momentjs-rails
https://jira.ets.berkeley.edu/jira/browse/CLC-4051
Merge pull request #2771 from christianv/CLC-4051

CLC-4051: Update gems: net-ldap / signet / icalendar / foundation-rails / therubyrhino / momentjs-rails