explorer: always show root folder and name the section "Folders"

src/vs/workbench/parts/files/browser/views/explorerView.ts

@@ -142,8 +142,7 @@ export class ExplorerView extends CollapsibleView {
 	}
 
 	public get name(): string {
-		const workspace = this.contextService.getWorkspace();
-		return workspace.roots.length === 1 ? workspace.name : nls.localize('folders', "Folders");
+		return nls.localize('folders', "Folders");
 	}
 
 	public set name(value) {
@@ -776,7 +775,7 @@ export class ExplorerView extends CollapsibleView {
 			// Subsequent refresh: Merge stat into our local model and refresh tree
 			modelStats.forEach((modelStat, index) => FileStat.mergeLocalWithDisk(modelStat, this.model.roots[index]));
 
-			const input = this.model.roots.length === 1 ? this.model.roots[0] : this.model;
+			const input = this.model;
 			if (input === this.explorerViewer.getInput()) {
 				return this.explorerViewer.refresh();
 			}
@@ -787,7 +786,6 @@ export class ExplorerView extends CollapsibleView {
 			const statsToExpand = expanded.length ? [this.model.roots[0]].concat(expanded) :
 				targetsToExpand.map(expand => this.model.findClosest(expand));
 
-			// Display roots only when there is more than 1 root
 			// Make sure to expand all folders that where expanded in the previous session
 			return this.explorerViewer.setInput(input).then(() => this.explorerViewer.expandAll(statsToExpand));
 		}, e => TPromise.wrapError(e));