User page was not marking Google Brews as "stubbed" if the brew belongs to another users' Google Drive or your own credentials are expired (it searches the current user drive for google files and checks if those are stubbed)
This now sets *every* file found on Mongo as "Stubbed", whether the Drive file belongs to the current user or not.
Since /edit and /new endpoints now have an `await` inside that could return an error (`getUsersBrewThemes()`), asyncHandler must be added to pass errors along instead of just crashing
`getBrew()` should do one thing only; retrieve a brew. UI elements like the list of themes available to the user are not part of a brew.
Moved into the handers for the `/edit/` and `/new/` endpoints
This removes the existing endpoints and replaces them with /theme.
/theme/:id - return a theme bundle containing all styling from this USER theme and any parents.
/theme/:engine/:id - return a theme bundle containing all styling from this STATIC theme and any parents
The theme bundle returns a marshalled JSON object containing:
styles - an array of strings representing the collected styles in loading order
snippets - an array ( currently empty ) of collected snippets.
The various bits of theme rendering code for <style> an style <link> have been swapped out with an 'onDidMount' call that loads the thendpoint and appends a series of <style> blocks to the brewRender's head.
This loses some caching advantages, but probably won't matter in the long run.
rename `getStaticTheme` to `getStaticThemeCSS`
rename `getBrewThemeWithCSS` to `getBrewThemeCSS`
rename `getBrewThemeParent` to `getBrewThemeParentCSS`
to avoid confusion with other "get" endpoints like `getBrew`, and unify naming for endpoint functions that return CSS.
Simplify `isStaticTheme` function (getting the parent theme is handled elsewhere)
