fixes #3163 - add link to first use instructions
fixes #4201 - update operating system by label, use description or fallname otherwise
Fixes #4553 - miscellaneous filters editing
fixes #4524 - The logged in user should be the default one in create new hosts
Fixes #4537 - user can set empty roles array via API
fixes #4290 add validation for user group max name length of 255
fixes #3996 Support to assign both cores and CPUs to VMWare guests
fixes #4442 - returning nil plays nice with try_to_login.
fixes #4194, #4459 - add main_app to root_path references for isolated engines
fixes #4583 - Added Environment name to rundeck output
fixes #3221 - add missing attributes to hostgroup show response
fixes #4485 prevents undefined method when cloning a host