This commit prepares the frontend code to be consumed by webpack.
It is a hack: In theory, modules should be declaring and importing the
modules they depend on and the globals they expose directly.
However, that requires significant per-module work, which we don't
really want to block moving our toolchain to webpack on.
So we expose the modules by setting window.varName = varName; as
needed in the js files.
This is less than perfect, but for most settings hitting
the enter key will now take you to the first element in
the right panel.
The two exceptions are below. They have checkboxes with
kind of strange markup:
Notifications
Authentication methods
If you toggle between Settings and Organization now, it
will remember where you were the last time (not counting
reload). Likewise if you go in and out of settings.
The old code always put you in the first section, which I
think was an accident of implementation. Of course, we'll
continue to default to the first row if you haven't gone
anywhere else.
This is mostly a code move, but because things are more
modular now, we don't need the two conditionals to find
out what kind of panel menu we're inside of, and our
selectors are less brittle.