- do not use the .d.ts files coming in from gulp-tsb
- remove the generation of .d.ts files
- run before compilation starts
- install file watchers directly

Upgrades our build scripts to target ES2017 since they are run on modern versions of node

This allows us to remove shims for es6 features such as `Object.assign`, and also remove a few extra typings packages

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

This ensures we pick up the correct typings for these imports

* Pick up TS 2.7

* Fix formatter in build script

* Fix build error for ts 2.7

* Pick up new ts format and tslint versions

* Update lock

* use 2.7.2 for build

* Formatting

* Pick up TS 2.7

* Fix formatter in build script

* Fix build error for ts 2.7

* Pick up new ts format and tslint versions

* Update lock

* use 2.7.2 for build

* Formatting

This reverts commit 23afe969.

Revert "oops"

This reverts commit 2be0f1d8.

Revert "cleanup top level gulpfile"

This reverts commit 84931171.

Revert "use strict"

This reverts commit b6b7e820.

Revert "forgot top level"

This reverts commit 15528287.

Revert "remove VSCODE_BUILD_QUIET"

This reverts commit 8df5e70d.

Bring in monaco.d.ts into the /src/ folder such that editor API can be typechecked to be exported correctly