With webpack, variables declared in each file are already file-local
(Global variables need to be explicitly exported), so these IIFEs are
no longer needed.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
This module makes it really easy to create are-you-sure
dialogs for dangerous operations.
Basically it's one function with five parameters. You
give three chunks of HTML, a callback function, and
a parent container.
The first use of this will be in settings_user_groups,
coming up in a couple commits.