More manual conversion of index based for loops to for-of loops

Replaces many loops of the form:

```js
for (let i = 0; i < elements.length; ++i) {
    const i = elements[i];
   ...
}
```

with:

```js
for (const element of elements) {
    ...
}
```

Mix of a horrible regex based find/replace and manual touch ups

We compile using the alwaysStrict flag so these directives are not needed

This part removes most `use strict` directives that are right after the file header

* bootstrap  - first cut

* bootstrap => bootstrap-fork, bootstrap-shared => bootstrap

* bootstrap - extract uriFromPath()

* bootstrap - extract readfile/writefile

* bootstrap - share more code when loading renderers

* boostrap-electron-browser => bootstrap-window

* bootstrap - cleanup main.js

* bootstrap - handle index.js

* bootstrap 💄