feat(api): old alerts detection for change(change&percent)
feat(api): custom metrics new endpoints
feat(api): custom metrics return series list for alerts
feat(DB): alerts-change-change fix
feat(api): save search
feat(api): refactored funnels
feat(api): removed funnels EE
feat(DB): saved search table
feat(DB): custom metrics rename title to name
feat(DB): funnels new index