CLC-4248 - Update AngularJS

https://github.com/angular/angular.js/blob/master/CHANGELOG.md#1224-static-levitation-2014-09-09
CLC-4248 - Update MomentJS

https://github.com/moment/moment/blob/develop/CHANGELOG.md#283
CLC-4248 - Update Rails

http://weblog.rubyonrails.org/releases/
https://github.com/rails/rails/compare/v4.1.5...v4.1.6
CLC-4248 - Update iCalendar

https://github.com/icalendar/icalendar/blob/65a352ad2e076196fc429aba93084560e587c9c8/History.txt#L1
CLC-4248 - Update net-ldap

https://github.com/ruby-ldap/ruby-net-ldap/compare/v0.7.0...v0.8.0
Merge pull request #2932 from christianv/CLC-4248

CLC-4248 - Update Gems - angular / icalendar / ldap / momentjs / rails