Now that the GML formatter is both perserving comments and also mostly
agrees to the existing GML style, it can be used to auto-format all the
GML files in the system. This commit does not only contain the scripts
for running the formatting on CI and the pre-commit hook, but also
initially formats all the existing GML files so that the hook is
successfull.
Browser has a bunch of settings, but most are non-trivial to add here.
So far, these are implemented:
- Homepage URL
- Whether to close download windows when they complete
The others will be added in subsequent commits.
