fixes #5200 - set config group counters to zero by default
fixes #5172 - typo SETTINGS[:location_enabled] instead of :locations_enabled causes default location select box not to be visible
Bump version to 1.6-develop
fixes #5214 - pin ancestry for Ruby 1.8 compatibility
fixes #5222 - Log ldap attributes in debug-level logging
fixes #5241 - Add support for external user groups.
fixes #3892 - process REMOTE_USER_GROUP_N and REMOTE_USER_GROUP_#, add user to groups based on external user groups.