- added Explore page and blueprint
- adds mechanism to retrieve a list of Customers (special Project tag)
- adds the ability to filter task metrics by Customer
- styling for applied filters string
- formatting for task metrics
- adds custom segments (including nested segments) for projects on explore page
- filter by bulk project names
- add hyperlinks with quarter interval to explore
- slightly improved interval calculation
- improved section headings indicating interval
- adds aggregated metrics, normalized metrics and rate metrics
- tasks by project_phids query use AND, so need to make multiple queries
- display 2 decimal points
- adds AggregatedTaskMetricsStats as companion to TaskMetricsStats
- segment tasks by customer, users, and service
- move/refactor utils.py and constants.py into module with submodules
- add checks for null projects