March 1 2012, minor update

A few minor bug fixes going out tonight:

• Alerts are no longer escalated to user accounts that have been suspended
• widening the legend field in graph definition UI
• getAlerts RPC call now supports StartEpoch and endEpoch to filter the returned set of alerts
• the RPC call to display a single widget no longer displays the trash/edit/delete icons on the widget
• a bug involving time based escalation chains incorrectly routing alerts on weekends has been fixed