Fix standalone editor gulp scripts.

Tree Shaking:
- do not proceed with tree shaking when there are compilation errors
- load .d.ts files in the language service
- adopt TS 3.1.1 in symbol resolution
- use the real tsconfig.json / with "node" resolution

Bundling:
- fix issue where files were being looked for in out-build instead of out-editor-build

build/monaco/api.ts

@@ -281,7 +281,7 @@ function generateDeclarationFile(out: string, inputFiles: { [file: string]: stri
 
 	const generateUsageImport = (moduleId: string) => {
 		let importName = 'm' + (++usageCounter);
-		usageImports.push(`import * as ${importName} from '${moduleId.replace(/\.d\.ts$/, '')}';`);
+		usageImports.push(`import * as ${importName} from './${moduleId.replace(/\.d\.ts$/, '')}';`);
 		return importName;
 	};