Fix Test Executor In VS15 Post Preview 4 (microsoft#1406)

**Bug**
The test executor can currently fail in vs15 post preview 4 because it tries to look up the nodejs.targets file in the global msbuild location. We now only install the targets file to the local, vs specific msbuild folder.

**Fix**
Similar to with the test discoverer, make sure we use the correct msbuild location

Fix New File Context Menu (microsoft#1343)

**Bug**

**Fix**
Remove the template lookup logic entirely and instead just create a blank file of the requested type

String Method FxCop Error Mop Up (microsoft#1337)

* Fix a few more FxCop Warnings about String Methods

**Bug**
Various FxCop warnings about strings, such as using the implicit overloads vs explicit ones.

**Fix**

- Make `Parse` methods use invarient culture.
- Fix a few more `StartsWith` calls
- Fix a few more format calls.

* A bit more mopup

Delete Smart Indent Provider and Connected Functionality (microsoft#1313

)

**Bug**
This class was only used for the old Node language service, we now pick up this functionality from TypeScript.

**Fix**
Delete the smart indent provider along with some other associated classes that are now no longer referenced.

Ensure Test Adapter Dependency DLLs are Copied to VSIX (microsoft#1257)

**Problem**
Test adapter depends on newtonsoft.json and Microsoft.VisualStudio.Shell.Interop. These are not included on their own in our vsix.

My previous fix just updated the vsix manifest and did not properly include these files

**Fix**
Add copy  step to ensure we copy these files to the vsix.

Merge pull request microsoft#859 from mjbvz/string-intern-memory-impr…

…ovements

Analysis String interning cleanup

Merge pull request microsoft#1155 from mjbvz/port-12-install-tools-fi…

…x-to-master

Bring Typings Tool Installer Fix to Master

Merge pull request microsoft#1155 from mjbvz/port-12-install-tools-fi…

…x-to-master

Bring Typings Tool Installer Fix to Master

Fix spelling of tool to reflect new directory name

Merge pull request microsoft#1143 from mjbvz/typings-wrapper

Create Wrapper Script for Installing Typings