Fixes #5834: Add group filter on group page
Merge pull request #669 from VinceMacBuche/ust_5833/implem_5834/add_group_filter

Fixes #5834: Add group filter on group page
Fixes #5844: Add send_metrics property and generate it for policies
Fixes #5843: Add user defined (via API) node properties
Merge pull request #671 from fanf/ust_5506/impl_5843/add_node_property_key_value_pair

Fixes #5843: Add user defined (via API) node properties
Merge pull request #670 from VinceMacBuche/ust_5809/5844/send_metrics_property

Fixes #5844: Add send_metrics property and generate it for policies
Fixes #5577: Add Backend and UI for Heartbeat configuration feature
Merge pull request #665 from VinceMacBuche/ust_5576/implem_5577/Heartbeat_ui_backend

Fixes #5577: Add Backend and UI for Heartbeat configuration feature
Fixes #5832: Replace Rudder Home page with a shiny dashboard