* Prepare for adding webpack submodule
* Actually switch webpack to submodule
I'm sure this will work with no problems!
* Add ignore=all to webpack gitmodule entry
The other submodules do this, although I'm not sure why.
* Add newline at end of .gitmodules
If there is a test.json in the directory, it expects to find a
submodule in the directory. The submodule should have the same name as
the directory itself. test.json contains a list of global types that
need to be available, or the empty list if none.
