This is mostly for development where VS Code might not have finished
compiling yet.

Makes it easier to upload and restore.

This appears to make vscodevim work again.

So we don't have to keep setting them for each CI and every single step
since there doesn't seem to be a way to share them between steps in
Drone.

This fixes the case where the script is killed before all the
dependencies were fully installed.

Doesn't affect Firefox but it does affect other browsers.

Fixes #1136.

Fixes #1104.

It doesn't show in the explorer anymore so there's no point. Also remove
the local scheme transform which is no longer required with the latest
client-side extension implementation.

This should fix all those reports of code-server dropping straight to
Node and things like #1121.

See #1109.

Fixes #1081, fixes #918.

Instead of doing a separate redundant build. The main problem was that
the files weren't being cached. There is probably a better way of
solving this but this seems to be the simplest for now.

Also skip the workbench html since we have our own.

They aren't used in subsequent files and just slow down CI since it has
to extract from the cache and then package the changes.

Fixes #1087.

Fixes it not being included in the optimized build as well as making it
more consistent.

This matches how the rest of the build is organized but also hopefully
solves an issue where the VS Code directory is empty because we try to
cache it directly and Travis might be creating it.

Also too the opportunity to rewrite the build script since there was a
change in the build steps (mainly how the product JSON is inserted) and
to get the build changes out of the patch. It also no longer relies on
external caching (we'll want to do this within CI instead).