Vscode merge (#4582)

* Merge from vscode 37cb23d3dd4f9433d56d4ba5ea3203580719a0bd

* fix issues with merges

* bump node version in azpipe

* replace license headers

* remove duplicate launch task

* fix build errors

* fix build errors

* fix tslint issues

* working through package and linux build issues

* more work

* wip

* fix packaged builds

* working through linux build errors

* wip

* wip

* wip

* fix mac and linux file limits

* iterate linux pipeline

* disable editor typing

* revert series to parallel

* remove optimize vscode from linux

* fix linting issues

* revert testing change

* add work round for new node

* readd packaging for extensions

* fix issue with angular not resolving decorator dependencies

src/sql/base/browser/ui/panel/panel.ts

@@ -199,11 +199,6 @@ export class TabbedPanel extends Disposable implements IThemable {
 					this.showTab(lastTab);
 				}
 			}
-
-			// this shouldn't happen but just in case
-			if (this._shownTab === undefined && this._tabMap.size > 0) {
-				this.showTab(this._tabMap.keys().next().value);
-			}
 		}
 
 		if (!this.options.showHeaderWhenSingleView && this._tabMap.size === 1 && this._headerVisible) {