bugfixing and working with chef backend scripts 

- added script for live activity group management
- removed a lot of UBL
- added exceptions to autoload names of module
- added routes for live activity group edit
- added some exceptions for better error handling
- live_activity .controller() method added
- some docstrings
- .set_live_activities() in LiveActivityGroup
- bugfixed master singular getters
Bugfixing and chef backend work

- added some TODOs
- made .translate_live_activities_names_to_ids() public
- live_activity_groups management script is now functional
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