(UserVoice) Added support for UserVoice SSO
(UserVoice) Add 'enabled' config field, change config file name
(UserVoice) Add tests for new isDefined validator
(UserVoice) Change 'Use HTTPS' configuration to a 'Base Access URL' configuration
(UserVoice) Point oae-rest to custom branch in package.json
(UserVoice) Fix unit test failure, review followup
(UserVoice) Switch to uservoice-sso module
#888 - Removed check in group.create for existing ID

Also included a validator check for valid roles and principal IDs
when creating a group and moved the Cassandra logic into the DAO
#888 - cleanup

* Cleaned up principals constants
* Removed unused `otherValues` parameter from the createGroup function
(UserVoice) Review follow-up
#888 - Cleaned up jsdoc
(UserVoice) Add ability to set empty string in config, and clear global admin values
Merge branch '888-remove-group-id-check' of http://github.com/simong/Hilary into 888-remove-group-id-check
Documentation clean-up
(UserVoice) Review followup
Merge branch 'uservoice' of https://github.com/mrvisser/Hilary into uservoice
Reset oae-rest version to 'latest'
Merge branch 'uservoice' of https://github.com/mrvisser/Hilary into uservoice
(Release 6.4.0) Bump version
(Release 6.4.0) Remove shrinkwrap