FRE-600: Fix code review blockers

- Consolidated duplicate UndoManagers to single instance
- Fixed connection promise to only resolve on 'connected' status
- Fixed WebSocketProvider import (WebsocketProvider)
- Added proper doc.destroy() cleanup
- Renamed isPresenceInitialized property to avoid conflict

Co-Authored-By: Paperclip <noreply@paperclip.ing>

node_modules/node-gyp-build/README.md

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+# node-gyp-build
+
+> Build tool and bindings loader for [`node-gyp`][node-gyp] that supports prebuilds.
+
+```
+npm install node-gyp-build
+```
+
+[![Build Status](https://travis-ci.org/prebuild/node-gyp-build.svg?branch=master)](https://travis-ci.org/prebuild/node-gyp-build)
+
+Use together with [`prebuildify`][prebuildify] to easily support prebuilds for your native modules.
+
+## Usage
+
+> **Note.** Prebuild names have changed in [`prebuildify@3`][prebuildify] and `node-gyp-build@4`. Please see the documentation below.
+
+`node-gyp-build` works similar to [`node-gyp build`][node-gyp] except that it will check if a build or prebuild is present before rebuilding your project.
+
+It's main intended use is as an npm install script and bindings loader for native modules that bundle prebuilds using [`prebuildify`][prebuildify].
+
+First add `node-gyp-build` as an install script to your native project
+
+``` js
+{
+  ...
+  "scripts": {
+    "install": "node-gyp-build"
+  }
+}
+```
+
+Then in your `index.js`, instead of using the [`bindings`](https://www.npmjs.com/package/bindings) module use `node-gyp-build` to load your binding.
+
+``` js
+var binding = require('node-gyp-build')(__dirname)
+```
+
+If you do these two things and bundle prebuilds with [`prebuildify`][prebuildify] your native module will work for most platforms
+without having to compile on install time AND will work in both node and electron without the need to recompile between usage.
+
+Users can override `node-gyp-build` and force compiling by doing `npm install --build-from-source`.
+
+## Supported prebuild names
+
+If so desired you can bundle more specific flavors, for example `musl` builds to support Alpine, or targeting a numbered ARM architecture version.
+
+These prebuilds can be bundled in addition to generic prebuilds; `node-gyp-build` will try to find the most specific flavor first. Prebuild filenames are composed of _tags_. The runtime tag takes precedence, as does an `abi` tag over `napi`. For more details on tags, please see [`prebuildify`][prebuildify].
+
+Values for the `libc` and `armv` tags are auto-detected but can be overridden through the `LIBC` and `ARM_VERSION` environment variables, respectively.
+
+## License
+
+MIT
+
+[prebuildify]: https://github.com/prebuild/prebuildify
+[node-gyp]: https://www.npmjs.com/package/node-gyp