Agent - Step Actions (#2779)

* fixed right click context menu bug in jobs view

* added stepInfo and edit job WIP

* show jobs in job edit

* added schedule description on select schedule

* fetch schedules during history and show in edit job

* added alerts to job histories and show in edit

* made history calls async

* filter menus now close when esc is pressed

* fixed bug where clicking on error row wouldnt populate job details

* added functionality to delete steps in a job

* added real time adding steps in edit job

src/sql/workbench/api/node/sqlExtHost.protocol.ts

@@ -370,6 +370,11 @@ export abstract class ExtHostDataProtocolShape {
 	 */
 	$deleteJob(handle: number, ownerUri: string, job: sqlops.AgentJobInfo): Thenable<sqlops.ResultStatus> { throw ni(); }
 
+	/**
+	 * Deletes a job step
+	 */
+	$deleteJobStep(handle: number, ownerUri: string, step: sqlops.AgentJobStepInfo): Thenable<sqlops.ResultStatus> { throw ni(); }
+
 	/**
 	 * Get Agent Alerts list
 	 */