View unresolved alerts and view alert details

Goal: Todd Carlson views a list of all unresolved alerts in the system and details of the alerts in order to determine what managed resources need attention.
Todd views the list of alerts that are in Open and Acknowledged States
Todd selects one of the alerts to view its details
Todd selects to view the Trigger Definition for the Alert to better understand what caused the alert
Todd returns to the list of alerts.
Verification:
The system presents all Alerts in Open and Acknowledged states by default
The system optionally presents Alerts in Resolved state
The system displays the Severity of the Alerts
The system can sort by Severity (not alphabetically)
The system can filter by Severity
The system displays the Ancestry of the Resource that has triggered the alert
The system can sort by Ancestry of the Resource that has triggered the alert (Alphabetically)
The system can filter by Ancestry of the Resource that has triggered the alert
The system displays the Creation Time of the alert
The system can sort by the Creation Time of the alert
The system can filter by the Creation Time of the alert
The system displays the Trigger Description
The system can sort by the Trigger Description (Alphabetically)
The system can filter by the Trigger Description